21583575

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 42788928

約数和(自身を除く): 21205353

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 47, 65, 75, 117, 141, 157, 195, 225, 235, 325, 423, 471, 585, 611, 705, 785, 975, 1175, 1413, 1833, 2041, 2115, 2355, 2925, 3055, 3525, 3925, 5499, 6123, 7065, 7379, 9165, 10205, 10575, 11775, 15275, 18369, 22137, 27495, 30615, 35325, 36895, 45825, 51025, 66411, 91845, 95927, 110685, 137475, 153075, 184475, 287781, 332055, 459225, 479635, 553425, 863343, 1438905, 1660275, 2398175, 4316715, 7194525, 21583575]

約数ペア:

[(1, 21583575), (3, 7194525), (5, 4316715), (9, 2398175), (13, 1660275), (15, 1438905), (25, 863343), (39, 553425), (45, 479635), (47, 459225), (65, 332055), (75, 287781), (117, 184475), (141, 153075), (157, 137475), (195, 110685), (225, 95927), (235, 91845), (325, 66411), (423, 51025), (471, 45825), (585, 36895), (611, 35325), (705, 30615), (785, 27495), (975, 22137), (1175, 18369), (1413, 15275), (1833, 11775), (2041, 10575), (2115, 10205), (2355, 9165), (2925, 7379), (3055, 7065), (3525, 6123), (3925, 5499)]