21305175

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14951}}^1$

素因数の和:14983

約数の個数: 24

約数和(自身を含む): 37080960

約数和(自身を除く): 15775785

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14951, 44853, 74755, 224265, 284069, 373775, 852207, 1121325, 1420345, 4261035, 7101725, 21305175]

約数ペア:

[(1, 21305175), (3, 7101725), (5, 4261035), (15, 1420345), (19, 1121325), (25, 852207), (57, 373775), (75, 284069), (95, 224265), (285, 74755), (475, 44853), (1425, 14951)]