81987960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9623}}^1$

素因数の和:9708

約数の個数: 64

約数和(自身を含む): 249454080

約数和(自身を除く): 167466120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520, 9623, 19246, 28869, 38492, 48115, 57738, 76984, 96230, 115476, 144345, 192460, 230952, 288690, 384920, 577380, 683233, 1154760, 1366466, 2049699, 2732932, 3416165, 4099398, 5465864, 6832330, 8198796, 10248495, 13664660, 16397592, 20496990, 27329320, 40993980, 81987960]

約数ペア:

[(1, 81987960), (2, 40993980), (3, 27329320), (4, 20496990), (5, 16397592), (6, 13664660), (8, 10248495), (10, 8198796), (12, 6832330), (15, 5465864), (20, 4099398), (24, 3416165), (30, 2732932), (40, 2049699), (60, 1366466), (71, 1154760), (120, 683233), (142, 577380), (213, 384920), (284, 288690), (355, 230952), (426, 192460), (568, 144345), (710, 115476), (852, 96230), (1065, 76984), (1420, 57738), (1704, 48115), (2130, 38492), (2840, 28869), (4260, 19246), (8520, 9623)]