639680040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^2$

素因数の和:165

約数の個数: 216

約数和(自身を含む): 2199306330

約数和(自身を除く): 1559626290

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 31, 36, 40, 43, 45, 60, 62, 72, 86, 90, 93, 120, 124, 129, 155, 172, 180, 186, 215, 248, 258, 279, 310, 344, 360, 372, 387, 430, 465, 516, 558, 620, 645, 744, 774, 860, 930, 961, 1032, 1116, 1240, 1290, 1333, 1395, 1548, 1720, 1849, 1860, 1922, 1935, 2232, 2580, 2666, 2790, 2883, 3096, 3698, 3720, 3844, 3870, 3999, 4805, 5160, 5332, 5547, 5580, 5766, 6665, 7396, 7688, 7740, 7998, 8649, 9245, 9610, 10664, 11094, 11160, 11532, 11997, 13330, 14415, 14792, 15480, 15996, 16641, 17298, 18490, 19220, 19995, 22188, 23064, 23994, 26660, 27735, 28830, 31992, 33282, 34596, 36980, 38440, 39990, 41323, 43245, 44376, 47988, 53320, 55470, 57319, 57660, 59985, 66564, 69192, 73960, 79980, 82646, 83205, 86490, 95976, 110940, 114638, 115320, 119970, 123969, 133128, 159960, 165292, 166410, 171957, 172980, 206615, 221880, 229276, 239940, 247938, 286595, 330584, 332820, 343914, 345960, 371907, 413230, 458552, 479880, 495876, 515871, 573190, 619845, 665640, 687828, 743814, 826460, 859785, 991752, 1031742, 1146380, 1239690, 1375656, 1487628, 1652920, 1719570, 1776889, 1859535, 2063484, 2292760, 2479380, 2579355, 2975256, 3439140, 3553778, 3719070, 4126968, 4958760, 5158710, 5330667, 6878280, 7107556, 7438140, 8884445, 10317420, 10661334, 14215112, 14876280, 15992001, 17768890, 20634840, 21322668, 26653335, 31984002, 35537780, 42645336, 53306670, 63968004, 71075560, 79960005, 106613340, 127936008, 159920010, 213226680, 319840020, 639680040]

約数ペア:

[(1, 639680040), (2, 319840020), (3, 213226680), (4, 159920010), (5, 127936008), (6, 106613340), (8, 79960005), (9, 71075560), (10, 63968004), (12, 53306670), (15, 42645336), (18, 35537780), (20, 31984002), (24, 26653335), (30, 21322668), (31, 20634840), (36, 17768890), (40, 15992001), (43, 14876280), (45, 14215112), (60, 10661334), (62, 10317420), (72, 8884445), (86, 7438140), (90, 7107556), (93, 6878280), (120, 5330667), (124, 5158710), (129, 4958760), (155, 4126968), (172, 3719070), (180, 3553778), (186, 3439140), (215, 2975256), (248, 2579355), (258, 2479380), (279, 2292760), (310, 2063484), (344, 1859535), (360, 1776889), (372, 1719570), (387, 1652920), (430, 1487628), (465, 1375656), (516, 1239690), (558, 1146380), (620, 1031742), (645, 991752), (744, 859785), (774, 826460), (860, 743814), (930, 687828), (961, 665640), (1032, 619845), (1116, 573190), (1240, 515871), (1290, 495876), (1333, 479880), (1395, 458552), (1548, 413230), (1720, 371907), (1849, 345960), (1860, 343914), (1922, 332820), (1935, 330584), (2232, 286595), (2580, 247938), (2666, 239940), (2790, 229276), (2883, 221880), (3096, 206615), (3698, 172980), (3720, 171957), (3844, 166410), (3870, 165292), (3999, 159960), (4805, 133128), (5160, 123969), (5332, 119970), (5547, 115320), (5580, 114638), (5766, 110940), (6665, 95976), (7396, 86490), (7688, 83205), (7740, 82646), (7998, 79980), (8649, 73960), (9245, 69192), (9610, 66564), (10664, 59985), (11094, 57660), (11160, 57319), (11532, 55470), (11997, 53320), (13330, 47988), (14415, 44376), (14792, 43245), (15480, 41323), (15996, 39990), (16641, 38440), (17298, 36980), (18490, 34596), (19220, 33282), (19995, 31992), (22188, 28830), (23064, 27735), (23994, 26660)]