20980740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 65028096

約数和(自身を除く): 44047356

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 83, 110, 132, 165, 166, 220, 249, 330, 332, 383, 415, 498, 660, 766, 830, 913, 996, 1149, 1245, 1532, 1660, 1826, 1915, 2298, 2490, 2739, 3652, 3830, 4213, 4565, 4596, 4980, 5478, 5745, 7660, 8426, 9130, 10956, 11490, 12639, 13695, 16852, 18260, 21065, 22980, 25278, 27390, 31789, 42130, 50556, 54780, 63195, 63578, 84260, 95367, 126390, 127156, 158945, 190734, 252780, 317890, 349679, 381468, 476835, 635780, 699358, 953670, 1049037, 1398716, 1748395, 1907340, 2098074, 3496790, 4196148, 5245185, 6993580, 10490370, 20980740]

約数ペア:

[(1, 20980740), (2, 10490370), (3, 6993580), (4, 5245185), (5, 4196148), (6, 3496790), (10, 2098074), (11, 1907340), (12, 1748395), (15, 1398716), (20, 1049037), (22, 953670), (30, 699358), (33, 635780), (44, 476835), (55, 381468), (60, 349679), (66, 317890), (83, 252780), (110, 190734), (132, 158945), (165, 127156), (166, 126390), (220, 95367), (249, 84260), (330, 63578), (332, 63195), (383, 54780), (415, 50556), (498, 42130), (660, 31789), (766, 27390), (830, 25278), (913, 22980), (996, 21065), (1149, 18260), (1245, 16852), (1532, 13695), (1660, 12639), (1826, 11490), (1915, 10956), (2298, 9130), (2490, 8426), (2739, 7660), (3652, 5745), (3830, 5478), (4213, 4980), (4565, 4596)]