21915675

素因数分解:

$3^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:652

約数の個数: 36

約数和(自身を含む): 39510120

約数和(自身を除く): 17594445

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 257, 379, 771, 1137, 1285, 1895, 2313, 3411, 3855, 5685, 6425, 9475, 11565, 17055, 19275, 28425, 57825, 85275, 97403, 292209, 487015, 876627, 1461045, 2435075, 4383135, 7305225, 21915675]

約数ペア:

[(1, 21915675), (3, 7305225), (5, 4383135), (9, 2435075), (15, 1461045), (25, 876627), (45, 487015), (75, 292209), (225, 97403), (257, 85275), (379, 57825), (771, 28425), (1137, 19275), (1285, 17055), (1895, 11565), (2313, 9475), (3411, 6425), (3855, 5685)]