80201680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1151}}^1$

素因数の和:1244

約数の個数: 80

約数和(自身を含む): 203986944

約数和(自身を除く): 123785264

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 335, 520, 536, 670, 871, 1040, 1072, 1151, 1340, 1742, 2302, 2680, 3484, 4355, 4604, 5360, 5755, 6968, 8710, 9208, 11510, 13936, 14963, 17420, 18416, 23020, 29926, 34840, 46040, 59852, 69680, 74815, 77117, 92080, 119704, 149630, 154234, 239408, 299260, 308468, 385585, 598520, 616936, 771170, 1002521, 1197040, 1233872, 1542340, 2005042, 3084680, 4010084, 5012605, 6169360, 8020168, 10025210, 16040336, 20050420, 40100840, 80201680]

約数ペア:

[(1, 80201680), (2, 40100840), (4, 20050420), (5, 16040336), (8, 10025210), (10, 8020168), (13, 6169360), (16, 5012605), (20, 4010084), (26, 3084680), (40, 2005042), (52, 1542340), (65, 1233872), (67, 1197040), (80, 1002521), (104, 771170), (130, 616936), (134, 598520), (208, 385585), (260, 308468), (268, 299260), (335, 239408), (520, 154234), (536, 149630), (670, 119704), (871, 92080), (1040, 77117), (1072, 74815), (1151, 69680), (1340, 59852), (1742, 46040), (2302, 34840), (2680, 29926), (3484, 23020), (4355, 18416), (4604, 17420), (5360, 14963), (5755, 13936), (6968, 11510), (8710, 9208)]