20559550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1289}}^1$

素因数の和:1341

約数の個数: 48

約数和(自身を含む): 43189200

約数和(自身を除く): 22629650

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1289, 1450, 1595, 2578, 3190, 6445, 7975, 12890, 14179, 15950, 28358, 32225, 37381, 64450, 70895, 74762, 141790, 186905, 354475, 373810, 411191, 708950, 822382, 934525, 1869050, 2055955, 4111910, 10279775, 20559550]

約数ペア:

[(1, 20559550), (2, 10279775), (5, 4111910), (10, 2055955), (11, 1869050), (22, 934525), (25, 822382), (29, 708950), (50, 411191), (55, 373810), (58, 354475), (110, 186905), (145, 141790), (275, 74762), (290, 70895), (319, 64450), (550, 37381), (638, 32225), (725, 28358), (1289, 15950), (1450, 14179), (1595, 12890), (2578, 7975), (3190, 6445)]