68719980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1249}}^1$

素因数の和:1399

約数の個数: 96

約数和(自身を含む): 221760000

約数和(自身を除く): 153040020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 131, 140, 210, 262, 393, 420, 524, 655, 786, 917, 1249, 1310, 1572, 1834, 1965, 2498, 2620, 2751, 3668, 3747, 3930, 4585, 4996, 5502, 6245, 7494, 7860, 8743, 9170, 11004, 12490, 13755, 14988, 17486, 18340, 18735, 24980, 26229, 27510, 34972, 37470, 43715, 52458, 55020, 74940, 87430, 104916, 131145, 163619, 174860, 262290, 327238, 490857, 524580, 654476, 818095, 981714, 1145333, 1636190, 1963428, 2290666, 2454285, 3272380, 3435999, 4581332, 4908570, 5726665, 6871998, 9817140, 11453330, 13743996, 17179995, 22906660, 34359990, 68719980]

約数ペア:

[(1, 68719980), (2, 34359990), (3, 22906660), (4, 17179995), (5, 13743996), (6, 11453330), (7, 9817140), (10, 6871998), (12, 5726665), (14, 4908570), (15, 4581332), (20, 3435999), (21, 3272380), (28, 2454285), (30, 2290666), (35, 1963428), (42, 1636190), (60, 1145333), (70, 981714), (84, 818095), (105, 654476), (131, 524580), (140, 490857), (210, 327238), (262, 262290), (393, 174860), (420, 163619), (524, 131145), (655, 104916), (786, 87430), (917, 74940), (1249, 55020), (1310, 52458), (1572, 43715), (1834, 37470), (1965, 34972), (2498, 27510), (2620, 26229), (2751, 24980), (3668, 18735), (3747, 18340), (3930, 17486), (4585, 14988), (4996, 13755), (5502, 12490), (6245, 11004), (7494, 9170), (7860, 8743)]