640491120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{38677}}^1$

素因数の和:38719

約数の個数: 120

約数和(自身を含む): 2244561696

約数和(自身を除く): 1604070576

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1380, 1656, 1840, 2070, 2760, 3312, 4140, 5520, 8280, 16560, 38677, 77354, 116031, 154708, 193385, 232062, 309416, 348093, 386770, 464124, 580155, 618832, 696186, 773540, 889571, 928248, 1160310, 1392372, 1547080, 1740465, 1779142, 1856496, 2320620, 2668713, 2784744, 3094160, 3480930, 3558284, 4447855, 4641240, 5337426, 5569488, 6961860, 7116568, 8006139, 8895710, 9282480, 10674852, 13343565, 13923720, 14233136, 16012278, 17791420, 21349704, 26687130, 27847440, 32024556, 35582840, 40030695, 42699408, 53374260, 64049112, 71165680, 80061390, 106748520, 128098224, 160122780, 213497040, 320245560, 640491120]

約数ペア:

[(1, 640491120), (2, 320245560), (3, 213497040), (4, 160122780), (5, 128098224), (6, 106748520), (8, 80061390), (9, 71165680), (10, 64049112), (12, 53374260), (15, 42699408), (16, 40030695), (18, 35582840), (20, 32024556), (23, 27847440), (24, 26687130), (30, 21349704), (36, 17791420), (40, 16012278), (45, 14233136), (46, 13923720), (48, 13343565), (60, 10674852), (69, 9282480), (72, 8895710), (80, 8006139), (90, 7116568), (92, 6961860), (115, 5569488), (120, 5337426), (138, 4641240), (144, 4447855), (180, 3558284), (184, 3480930), (207, 3094160), (230, 2784744), (240, 2668713), (276, 2320620), (345, 1856496), (360, 1779142), (368, 1740465), (414, 1547080), (460, 1392372), (552, 1160310), (690, 928248), (720, 889571), (828, 773540), (920, 696186), (1035, 618832), (1104, 580155), (1380, 464124), (1656, 386770), (1840, 348093), (2070, 309416), (2760, 232062), (3312, 193385), (4140, 154708), (5520, 116031), (8280, 77354), (16560, 38677)]