21523580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4357}}^1$

素因数の和:4398

約数の個数: 48

約数和(自身を含む): 51250080

約数和(自身を除く): 29726500

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4357, 4940, 8714, 17428, 21785, 43570, 56641, 82783, 87140, 113282, 165566, 226564, 283205, 331132, 413915, 566410, 827830, 1076179, 1132820, 1655660, 2152358, 4304716, 5380895, 10761790, 21523580]

約数ペア:

[(1, 21523580), (2, 10761790), (4, 5380895), (5, 4304716), (10, 2152358), (13, 1655660), (19, 1132820), (20, 1076179), (26, 827830), (38, 566410), (52, 413915), (65, 331132), (76, 283205), (95, 226564), (130, 165566), (190, 113282), (247, 87140), (260, 82783), (380, 56641), (494, 43570), (988, 21785), (1235, 17428), (2470, 8714), (4357, 4940)]