87465980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{599}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 215460000

約数和(自身を除く): 127994020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 245, 298, 490, 596, 599, 745, 980, 1043, 1198, 1490, 2086, 2396, 2980, 2995, 4172, 4193, 5215, 5990, 7301, 8386, 10430, 11980, 14602, 16772, 20860, 20965, 29204, 29351, 36505, 41930, 58702, 73010, 83860, 89251, 117404, 146020, 146755, 178502, 293510, 357004, 446255, 587020, 624757, 892510, 1249514, 1785020, 2499028, 3123785, 4373299, 6247570, 8746598, 12495140, 17493196, 21866495, 43732990, 87465980]

約数ペア:

[(1, 87465980), (2, 43732990), (4, 21866495), (5, 17493196), (7, 12495140), (10, 8746598), (14, 6247570), (20, 4373299), (28, 3123785), (35, 2499028), (49, 1785020), (70, 1249514), (98, 892510), (140, 624757), (149, 587020), (196, 446255), (245, 357004), (298, 293510), (490, 178502), (596, 146755), (599, 146020), (745, 117404), (980, 89251), (1043, 83860), (1198, 73010), (1490, 58702), (2086, 41930), (2396, 36505), (2980, 29351), (2995, 29204), (4172, 20965), (4193, 20860), (5215, 16772), (5990, 14602), (7301, 11980), (8386, 10430)]