21749520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6971}}^1$

素因数の和:7000

約数の個数: 80

約数和(自身を含む): 72620352

約数和(自身を除く): 50870832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6971, 13942, 20913, 27884, 34855, 41826, 55768, 69710, 83652, 90623, 104565, 111536, 139420, 167304, 181246, 209130, 271869, 278840, 334608, 362492, 418260, 453115, 543738, 557680, 724984, 836520, 906230, 1087476, 1359345, 1449968, 1673040, 1812460, 2174952, 2718690, 3624920, 4349904, 5437380, 7249840, 10874760, 21749520]

約数ペア:

[(1, 21749520), (2, 10874760), (3, 7249840), (4, 5437380), (5, 4349904), (6, 3624920), (8, 2718690), (10, 2174952), (12, 1812460), (13, 1673040), (15, 1449968), (16, 1359345), (20, 1087476), (24, 906230), (26, 836520), (30, 724984), (39, 557680), (40, 543738), (48, 453115), (52, 418260), (60, 362492), (65, 334608), (78, 278840), (80, 271869), (104, 209130), (120, 181246), (130, 167304), (156, 139420), (195, 111536), (208, 104565), (240, 90623), (260, 83652), (312, 69710), (390, 55768), (520, 41826), (624, 34855), (780, 27884), (1040, 20913), (1560, 13942), (3120, 6971)]