20669520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1300

約数の個数: 80

約数和(自身を含む): 65031552

約数和(自身を除く): 44362032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1213, 1420, 1704, 2130, 2426, 2840, 3408, 3639, 4260, 4852, 5680, 6065, 7278, 8520, 9704, 12130, 14556, 17040, 18195, 19408, 24260, 29112, 36390, 48520, 58224, 72780, 86123, 97040, 145560, 172246, 258369, 291120, 344492, 430615, 516738, 688984, 861230, 1033476, 1291845, 1377968, 1722460, 2066952, 2583690, 3444920, 4133904, 5167380, 6889840, 10334760, 20669520]

約数ペア:

[(1, 20669520), (2, 10334760), (3, 6889840), (4, 5167380), (5, 4133904), (6, 3444920), (8, 2583690), (10, 2066952), (12, 1722460), (15, 1377968), (16, 1291845), (20, 1033476), (24, 861230), (30, 688984), (40, 516738), (48, 430615), (60, 344492), (71, 291120), (80, 258369), (120, 172246), (142, 145560), (213, 97040), (240, 86123), (284, 72780), (355, 58224), (426, 48520), (568, 36390), (710, 29112), (852, 24260), (1065, 19408), (1136, 18195), (1213, 17040), (1420, 14556), (1704, 12130), (2130, 9704), (2426, 8520), (2840, 7278), (3408, 6065), (3639, 5680), (4260, 4852)]