21696075

素因数分解:

$3^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{457}}^1$

素因数の和:684

約数の個数: 36

約数和(自身を含む): 39129688

約数和(自身を除く): 17433613

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 211, 225, 457, 633, 1055, 1371, 1899, 2285, 3165, 4113, 5275, 6855, 9495, 11425, 15825, 20565, 34275, 47475, 96427, 102825, 289281, 482135, 867843, 1446405, 2410675, 4339215, 7232025, 21696075]

約数ペア:

[(1, 21696075), (3, 7232025), (5, 4339215), (9, 2410675), (15, 1446405), (25, 867843), (45, 482135), (75, 289281), (211, 102825), (225, 96427), (457, 47475), (633, 34275), (1055, 20565), (1371, 15825), (1899, 11425), (2285, 9495), (3165, 6855), (4113, 5275)]