20634840

素因数分解:

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

素因数の和:134

約数の個数: 144

約数和(自身を含む): 70873920

約数和(自身を除く): 50239080

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, 1032, 1116, 1240, 1290, 1333, 1395, 1548, 1720, 1849, 1860, 1935, 2232, 2580, 2666, 2790, 3096, 3698, 3720, 3870, 3999, 5160, 5332, 5547, 5580, 6665, 7396, 7740, 7998, 9245, 10664, 11094, 11160, 11997, 13330, 14792, 15480, 15996, 16641, 18490, 19995, 22188, 23994, 26660, 27735, 31992, 33282, 36980, 39990, 44376, 47988, 53320, 55470, 57319, 59985, 66564, 73960, 79980, 83205, 95976, 110940, 114638, 119970, 133128, 159960, 166410, 171957, 221880, 229276, 239940, 286595, 332820, 343914, 458552, 479880, 515871, 573190, 665640, 687828, 859785, 1031742, 1146380, 1375656, 1719570, 2063484, 2292760, 2579355, 3439140, 4126968, 5158710, 6878280, 10317420, 20634840]

約数ペア:

[(1, 20634840), (2, 10317420), (3, 6878280), (4, 5158710), (5, 4126968), (6, 3439140), (8, 2579355), (9, 2292760), (10, 2063484), (12, 1719570), (15, 1375656), (18, 1146380), (20, 1031742), (24, 859785), (30, 687828), (31, 665640), (36, 573190), (40, 515871), (43, 479880), (45, 458552), (60, 343914), (62, 332820), (72, 286595), (86, 239940), (90, 229276), (93, 221880), (120, 171957), (124, 166410), (129, 159960), (155, 133128), (172, 119970), (180, 114638), (186, 110940), (215, 95976), (248, 83205), (258, 79980), (279, 73960), (310, 66564), (344, 59985), (360, 57319), (372, 55470), (387, 53320), (430, 47988), (465, 44376), (516, 39990), (558, 36980), (620, 33282), (645, 31992), (744, 27735), (774, 26660), (860, 23994), (930, 22188), (1032, 19995), (1116, 18490), (1240, 16641), (1290, 15996), (1333, 15480), (1395, 14792), (1548, 13330), (1720, 11997), (1849, 11160), (1860, 11094), (1935, 10664), (2232, 9245), (2580, 7998), (2666, 7740), (2790, 7396), (3096, 6665), (3698, 5580), (3720, 5547), (3870, 5332), (3999, 5160)]