21849620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4423}}^1$

素因数の和:4464

約数の個数: 48

約数和(自身を含む): 52026240

約数和(自身を除く): 30176620

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, 4423, 4940, 8846, 17692, 22115, 44230, 57499, 84037, 88460, 114998, 168074, 229996, 287495, 336148, 420185, 574990, 840370, 1092481, 1149980, 1680740, 2184962, 4369924, 5462405, 10924810, 21849620]

約数ペア:

[(1, 21849620), (2, 10924810), (4, 5462405), (5, 4369924), (10, 2184962), (13, 1680740), (19, 1149980), (20, 1092481), (26, 840370), (38, 574990), (52, 420185), (65, 336148), (76, 287495), (95, 229996), (130, 168074), (190, 114998), (247, 88460), (260, 84037), (380, 57499), (494, 44230), (988, 22115), (1235, 17692), (2470, 8846), (4423, 4940)]