21671925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 39610560

約数和(自身を除く): 17938635

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 109, 165, 241, 275, 327, 545, 723, 825, 1199, 1205, 1635, 2651, 2725, 3597, 3615, 5995, 6025, 7953, 8175, 13255, 17985, 18075, 26269, 29975, 39765, 66275, 78807, 89925, 131345, 198825, 288959, 394035, 656725, 866877, 1444795, 1970175, 4334385, 7223975, 21671925]

約数ペア:

[(1, 21671925), (3, 7223975), (5, 4334385), (11, 1970175), (15, 1444795), (25, 866877), (33, 656725), (55, 394035), (75, 288959), (109, 198825), (165, 131345), (241, 89925), (275, 78807), (327, 66275), (545, 39765), (723, 29975), (825, 26269), (1199, 18075), (1205, 17985), (1635, 13255), (2651, 8175), (2725, 7953), (3597, 6025), (3615, 5995)]