20129912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 43683840

約数和(自身を除く): 23553928

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 47, 62, 88, 94, 124, 157, 188, 248, 314, 341, 376, 517, 628, 682, 1034, 1256, 1364, 1457, 1727, 2068, 2728, 2914, 3454, 4136, 4867, 5828, 6908, 7379, 9734, 11656, 13816, 14758, 16027, 19468, 29516, 32054, 38936, 53537, 59032, 64108, 81169, 107074, 128216, 162338, 214148, 228749, 324676, 428296, 457498, 649352, 914996, 1829992, 2516239, 5032478, 10064956, 20129912]

約数ペア:

[(1, 20129912), (2, 10064956), (4, 5032478), (8, 2516239), (11, 1829992), (22, 914996), (31, 649352), (44, 457498), (47, 428296), (62, 324676), (88, 228749), (94, 214148), (124, 162338), (157, 128216), (188, 107074), (248, 81169), (314, 64108), (341, 59032), (376, 53537), (517, 38936), (628, 32054), (682, 29516), (1034, 19468), (1256, 16027), (1364, 14758), (1457, 13816), (1727, 11656), (2068, 9734), (2728, 7379), (2914, 6908), (3454, 5828), (4136, 4867)]