20017020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 38688900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 79, 82, 103, 123, 158, 164, 205, 206, 237, 246, 309, 316, 395, 410, 412, 474, 492, 515, 615, 618, 790, 820, 948, 1030, 1185, 1230, 1236, 1545, 1580, 2060, 2370, 2460, 3090, 3239, 4223, 4740, 6180, 6478, 8137, 8446, 9717, 12669, 12956, 16195, 16274, 16892, 19434, 21115, 24411, 25338, 32390, 32548, 38868, 40685, 42230, 48585, 48822, 50676, 63345, 64780, 81370, 84460, 97170, 97644, 122055, 126690, 162740, 194340, 244110, 253380, 333617, 488220, 667234, 1000851, 1334468, 1668085, 2001702, 3336170, 4003404, 5004255, 6672340, 10008510, 20017020]

約数ペア:

[(1, 20017020), (2, 10008510), (3, 6672340), (4, 5004255), (5, 4003404), (6, 3336170), (10, 2001702), (12, 1668085), (15, 1334468), (20, 1000851), (30, 667234), (41, 488220), (60, 333617), (79, 253380), (82, 244110), (103, 194340), (123, 162740), (158, 126690), (164, 122055), (205, 97644), (206, 97170), (237, 84460), (246, 81370), (309, 64780), (316, 63345), (395, 50676), (410, 48822), (412, 48585), (474, 42230), (492, 40685), (515, 38868), (615, 32548), (618, 32390), (790, 25338), (820, 24411), (948, 21115), (1030, 19434), (1185, 16892), (1230, 16274), (1236, 16195), (1545, 12956), (1580, 12669), (2060, 9717), (2370, 8446), (2460, 8137), (3090, 6478), (3239, 6180), (4223, 4740)]