19509050

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:551

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 20666950

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 79, 110, 158, 275, 395, 449, 550, 790, 869, 898, 1738, 1975, 2245, 3950, 4345, 4490, 4939, 8690, 9878, 11225, 21725, 22450, 24695, 35471, 43450, 49390, 70942, 123475, 177355, 246950, 354710, 390181, 780362, 886775, 1773550, 1950905, 3901810, 9754525, 19509050]

約数ペア:

[(1, 19509050), (2, 9754525), (5, 3901810), (10, 1950905), (11, 1773550), (22, 886775), (25, 780362), (50, 390181), (55, 354710), (79, 246950), (110, 177355), (158, 123475), (275, 70942), (395, 49390), (449, 43450), (550, 35471), (790, 24695), (869, 22450), (898, 21725), (1738, 11225), (1975, 9878), (2245, 8690), (3950, 4939), (4345, 4490)]