20381520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{521}}^1$

素因数の和:700

約数の個数: 80

約数和(自身を含む): 63692352

約数和(自身を除く): 43310832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 521, 652, 815, 978, 1042, 1304, 1563, 1630, 1956, 2084, 2445, 2605, 2608, 3126, 3260, 3912, 4168, 4890, 5210, 6252, 6520, 7815, 7824, 8336, 9780, 10420, 12504, 13040, 15630, 19560, 20840, 25008, 31260, 39120, 41680, 62520, 84923, 125040, 169846, 254769, 339692, 424615, 509538, 679384, 849230, 1019076, 1273845, 1358768, 1698460, 2038152, 2547690, 3396920, 4076304, 5095380, 6793840, 10190760, 20381520]

約数ペア:

[(1, 20381520), (2, 10190760), (3, 6793840), (4, 5095380), (5, 4076304), (6, 3396920), (8, 2547690), (10, 2038152), (12, 1698460), (15, 1358768), (16, 1273845), (20, 1019076), (24, 849230), (30, 679384), (40, 509538), (48, 424615), (60, 339692), (80, 254769), (120, 169846), (163, 125040), (240, 84923), (326, 62520), (489, 41680), (521, 39120), (652, 31260), (815, 25008), (978, 20840), (1042, 19560), (1304, 15630), (1563, 13040), (1630, 12504), (1956, 10420), (2084, 9780), (2445, 8336), (2605, 7824), (2608, 7815), (3126, 6520), (3260, 6252), (3912, 5210), (4168, 4890)]