405696520

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{557}}^1$

素因数の和:838

約数の個数: 64

約数和(自身を含む): 928065600

約数和(自身を除く): 522369080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 139, 262, 278, 524, 556, 557, 655, 695, 1048, 1112, 1114, 1310, 1390, 2228, 2620, 2780, 2785, 4456, 5240, 5560, 5570, 11140, 18209, 22280, 36418, 72836, 72967, 77423, 91045, 145672, 145934, 154846, 182090, 291868, 309692, 364180, 364835, 387115, 583736, 619384, 728360, 729670, 774230, 1459340, 1548460, 2918680, 3096920, 10142413, 20284826, 40569652, 50712065, 81139304, 101424130, 202848260, 405696520]

約数ペア:

[(1, 405696520), (2, 202848260), (4, 101424130), (5, 81139304), (8, 50712065), (10, 40569652), (20, 20284826), (40, 10142413), (131, 3096920), (139, 2918680), (262, 1548460), (278, 1459340), (524, 774230), (556, 729670), (557, 728360), (655, 619384), (695, 583736), (1048, 387115), (1112, 364835), (1114, 364180), (1310, 309692), (1390, 291868), (2228, 182090), (2620, 154846), (2780, 145934), (2785, 145672), (4456, 91045), (5240, 77423), (5560, 72967), (5570, 72836), (11140, 36418), (18209, 22280)]