21455665

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2423}}^1$

素因数の和:2469

約数の個数: 32

約数和(自身を含む): 33509376

約数和(自身を除く): 12053711

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 2423, 8855, 12115, 16961, 26653, 55729, 84805, 133265, 186571, 278645, 390103, 613019, 932855, 1950515, 3065095, 4291133, 21455665]

約数ペア:

[(1, 21455665), (5, 4291133), (7, 3065095), (11, 1950515), (23, 932855), (35, 613019), (55, 390103), (77, 278645), (115, 186571), (161, 133265), (253, 84805), (385, 55729), (805, 26653), (1265, 16961), (1771, 12115), (2423, 8855)]