207621520

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{18671}}^1$

素因数の和:18823

約数の個数: 40

約数和(自身を含む): 486218880

約数和(自身を除く): 278597360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 18671, 37342, 74684, 93355, 149368, 186710, 298736, 373420, 746840, 1493680, 2595269, 5190538, 10381076, 12976345, 20762152, 25952690, 41524304, 51905380, 103810760, 207621520]

約数ペア:

[(1, 207621520), (2, 103810760), (4, 51905380), (5, 41524304), (8, 25952690), (10, 20762152), (16, 12976345), (20, 10381076), (40, 5190538), (80, 2595269), (139, 1493680), (278, 746840), (556, 373420), (695, 298736), (1112, 186710), (1390, 149368), (2224, 93355), (2780, 74684), (5560, 37342), (11120, 18671)]