21292640

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1823}}^1$

素因数の和:1911

約数の個数: 48

約数和(自身を含む): 51020928

約数和(自身を除く): 29728288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 1823, 2336, 2920, 3646, 5840, 7292, 9115, 11680, 14584, 18230, 29168, 36460, 58336, 72920, 133079, 145840, 266158, 291680, 532316, 665395, 1064632, 1330790, 2129264, 2661580, 4258528, 5323160, 10646320, 21292640]

約数ペア:

[(1, 21292640), (2, 10646320), (4, 5323160), (5, 4258528), (8, 2661580), (10, 2129264), (16, 1330790), (20, 1064632), (32, 665395), (40, 532316), (73, 291680), (80, 266158), (146, 145840), (160, 133079), (292, 72920), (365, 58336), (584, 36460), (730, 29168), (1168, 18230), (1460, 14584), (1823, 11680), (2336, 9115), (2920, 7292), (3646, 5840)]