19198580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 23137420

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 395, 419, 580, 790, 838, 1580, 1676, 2095, 2291, 4190, 4582, 8380, 9164, 11455, 12151, 22910, 24302, 33101, 45820, 48604, 60755, 66202, 121510, 132404, 165505, 243020, 331010, 662020, 959929, 1919858, 3839716, 4799645, 9599290, 19198580]

約数ペア:

[(1, 19198580), (2, 9599290), (4, 4799645), (5, 3839716), (10, 1919858), (20, 959929), (29, 662020), (58, 331010), (79, 243020), (116, 165505), (145, 132404), (158, 121510), (290, 66202), (316, 60755), (395, 48604), (419, 45820), (580, 33101), (790, 24302), (838, 22910), (1580, 12151), (1676, 11455), (2095, 9164), (2291, 8380), (4190, 4582)]