20111820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4243}}^1$

素因数の和:4334

約数の個数: 48

約数和(自身を含む): 57039360

約数和(自身を除く): 36927540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4243, 4740, 8486, 12729, 16972, 21215, 25458, 42430, 50916, 63645, 84860, 127290, 254580, 335197, 670394, 1005591, 1340788, 1675985, 2011182, 3351970, 4022364, 5027955, 6703940, 10055910, 20111820]

約数ペア:

[(1, 20111820), (2, 10055910), (3, 6703940), (4, 5027955), (5, 4022364), (6, 3351970), (10, 2011182), (12, 1675985), (15, 1340788), (20, 1005591), (30, 670394), (60, 335197), (79, 254580), (158, 127290), (237, 84860), (316, 63645), (395, 50916), (474, 42430), (790, 25458), (948, 21215), (1185, 16972), (1580, 12729), (2370, 8486), (4243, 4740)]