21518200

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9781}}^1$

素因数の和:9808

約数の個数: 48

約数和(自身を含む): 54583560

約数和(自身を除く): 33065360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9781, 19562, 39124, 48905, 78248, 97810, 107591, 195620, 215182, 244525, 391240, 430364, 489050, 537955, 860728, 978100, 1075910, 1956200, 2151820, 2689775, 4303640, 5379550, 10759100, 21518200]

約数ペア:

[(1, 21518200), (2, 10759100), (4, 5379550), (5, 4303640), (8, 2689775), (10, 2151820), (11, 1956200), (20, 1075910), (22, 978100), (25, 860728), (40, 537955), (44, 489050), (50, 430364), (55, 391240), (88, 244525), (100, 215182), (110, 195620), (200, 107591), (220, 97810), (275, 78248), (440, 48905), (550, 39124), (1100, 19562), (2200, 9781)]