21891120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1721}}^1$

素因数の和:1790

約数の個数: 80

約数和(自身を含む): 69183072

約数和(自身を除く): 47291952

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 53, 60, 80, 106, 120, 159, 212, 240, 265, 318, 424, 530, 636, 795, 848, 1060, 1272, 1590, 1721, 2120, 2544, 3180, 3442, 4240, 5163, 6360, 6884, 8605, 10326, 12720, 13768, 17210, 20652, 25815, 27536, 34420, 41304, 51630, 68840, 82608, 91213, 103260, 137680, 182426, 206520, 273639, 364852, 413040, 456065, 547278, 729704, 912130, 1094556, 1368195, 1459408, 1824260, 2189112, 2736390, 3648520, 4378224, 5472780, 7297040, 10945560, 21891120]

約数ペア:

[(1, 21891120), (2, 10945560), (3, 7297040), (4, 5472780), (5, 4378224), (6, 3648520), (8, 2736390), (10, 2189112), (12, 1824260), (15, 1459408), (16, 1368195), (20, 1094556), (24, 912130), (30, 729704), (40, 547278), (48, 456065), (53, 413040), (60, 364852), (80, 273639), (106, 206520), (120, 182426), (159, 137680), (212, 103260), (240, 91213), (265, 82608), (318, 68840), (424, 51630), (530, 41304), (636, 34420), (795, 27536), (848, 25815), (1060, 20652), (1272, 17210), (1590, 13768), (1721, 12720), (2120, 10326), (2544, 8605), (3180, 6884), (3442, 6360), (4240, 5163)]