21872840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49711}}^1$

素因数の和:49733

約数の個数: 32

約数和(自身を含む): 53688960

約数和(自身を除く): 31816120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49711, 99422, 198844, 248555, 397688, 497110, 546821, 994220, 1093642, 1988440, 2187284, 2734105, 4374568, 5468210, 10936420, 21872840]

約数ペア:

[(1, 21872840), (2, 10936420), (4, 5468210), (5, 4374568), (8, 2734105), (10, 2187284), (11, 1988440), (20, 1093642), (22, 994220), (40, 546821), (44, 497110), (55, 397688), (88, 248555), (110, 198844), (220, 99422), (440, 49711)]