21710325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3181}}^1$

素因数の和:3214

約数の個数: 48

約数和(自身を含む): 44191616

約数和(自身を除く): 22481291

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 175, 195, 273, 325, 455, 525, 975, 1365, 2275, 3181, 6825, 9543, 15905, 22267, 41353, 47715, 66801, 79525, 111335, 124059, 206765, 238575, 289471, 334005, 556675, 620295, 868413, 1033825, 1447355, 1670025, 3101475, 4342065, 7236775, 21710325]

約数ペア:

[(1, 21710325), (3, 7236775), (5, 4342065), (7, 3101475), (13, 1670025), (15, 1447355), (21, 1033825), (25, 868413), (35, 620295), (39, 556675), (65, 334005), (75, 289471), (91, 238575), (105, 206765), (175, 124059), (195, 111335), (273, 79525), (325, 66801), (455, 47715), (525, 41353), (975, 22267), (1365, 15905), (2275, 9543), (3181, 6825)]