72221940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2$

素因数の和:139

約数の個数: 216

約数和(自身を含む): 264595968

約数和(自身を除く): 192374028

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 43, 45, 60, 62, 63, 70, 84, 86, 90, 93, 105, 124, 126, 129, 140, 155, 172, 180, 186, 210, 215, 217, 252, 258, 279, 301, 310, 315, 372, 387, 420, 430, 434, 465, 516, 558, 602, 620, 630, 645, 651, 774, 860, 868, 903, 930, 1085, 1116, 1204, 1260, 1290, 1302, 1333, 1395, 1505, 1548, 1806, 1849, 1860, 1935, 1953, 2170, 2580, 2604, 2666, 2709, 2790, 3010, 3255, 3612, 3698, 3870, 3906, 3999, 4340, 4515, 5332, 5418, 5547, 5580, 6020, 6510, 6665, 7396, 7740, 7812, 7998, 9030, 9245, 9331, 9765, 10836, 11094, 11997, 12943, 13020, 13330, 13545, 15996, 16641, 18060, 18490, 18662, 19530, 19995, 22188, 23994, 25886, 26660, 27090, 27735, 27993, 33282, 36980, 37324, 38829, 39060, 39990, 46655, 47988, 51772, 54180, 55470, 55986, 57319, 59985, 64715, 66564, 77658, 79980, 83205, 83979, 93310, 110940, 111972, 114638, 116487, 119970, 129430, 139965, 155316, 166410, 167958, 171957, 186620, 194145, 229276, 232974, 239940, 258860, 279930, 286595, 332820, 335916, 343914, 388290, 401233, 419895, 465948, 515871, 559860, 573190, 582435, 687828, 776580, 802466, 839790, 859785, 1031742, 1146380, 1164870, 1203699, 1604932, 1679580, 1719570, 2006165, 2063484, 2329740, 2407398, 2579355, 3439140, 3611097, 4012330, 4814796, 5158710, 6018495, 7222194, 8024660, 10317420, 12036990, 14444388, 18055485, 24073980, 36110970, 72221940]

約数ペア:

[(1, 72221940), (2, 36110970), (3, 24073980), (4, 18055485), (5, 14444388), (6, 12036990), (7, 10317420), (9, 8024660), (10, 7222194), (12, 6018495), (14, 5158710), (15, 4814796), (18, 4012330), (20, 3611097), (21, 3439140), (28, 2579355), (30, 2407398), (31, 2329740), (35, 2063484), (36, 2006165), (42, 1719570), (43, 1679580), (45, 1604932), (60, 1203699), (62, 1164870), (63, 1146380), (70, 1031742), (84, 859785), (86, 839790), (90, 802466), (93, 776580), (105, 687828), (124, 582435), (126, 573190), (129, 559860), (140, 515871), (155, 465948), (172, 419895), (180, 401233), (186, 388290), (210, 343914), (215, 335916), (217, 332820), (252, 286595), (258, 279930), (279, 258860), (301, 239940), (310, 232974), (315, 229276), (372, 194145), (387, 186620), (420, 171957), (430, 167958), (434, 166410), (465, 155316), (516, 139965), (558, 129430), (602, 119970), (620, 116487), (630, 114638), (645, 111972), (651, 110940), (774, 93310), (860, 83979), (868, 83205), (903, 79980), (930, 77658), (1085, 66564), (1116, 64715), (1204, 59985), (1260, 57319), (1290, 55986), (1302, 55470), (1333, 54180), (1395, 51772), (1505, 47988), (1548, 46655), (1806, 39990), (1849, 39060), (1860, 38829), (1935, 37324), (1953, 36980), (2170, 33282), (2580, 27993), (2604, 27735), (2666, 27090), (2709, 26660), (2790, 25886), (3010, 23994), (3255, 22188), (3612, 19995), (3698, 19530), (3870, 18662), (3906, 18490), (3999, 18060), (4340, 16641), (4515, 15996), (5332, 13545), (5418, 13330), (5547, 13020), (5580, 12943), (6020, 11997), (6510, 11094), (6665, 10836), (7396, 9765), (7740, 9331), (7812, 9245), (7998, 9030)]