20696880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1039}}^1$

素因数の和:1138

約数の個数: 80

約数和(自身を含む): 64995840

約数和(自身を除く): 44298960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 83, 120, 166, 240, 249, 332, 415, 498, 664, 830, 996, 1039, 1245, 1328, 1660, 1992, 2078, 2490, 3117, 3320, 3984, 4156, 4980, 5195, 6234, 6640, 8312, 9960, 10390, 12468, 15585, 16624, 19920, 20780, 24936, 31170, 41560, 49872, 62340, 83120, 86237, 124680, 172474, 249360, 258711, 344948, 431185, 517422, 689896, 862370, 1034844, 1293555, 1379792, 1724740, 2069688, 2587110, 3449480, 4139376, 5174220, 6898960, 10348440, 20696880]

約数ペア:

[(1, 20696880), (2, 10348440), (3, 6898960), (4, 5174220), (5, 4139376), (6, 3449480), (8, 2587110), (10, 2069688), (12, 1724740), (15, 1379792), (16, 1293555), (20, 1034844), (24, 862370), (30, 689896), (40, 517422), (48, 431185), (60, 344948), (80, 258711), (83, 249360), (120, 172474), (166, 124680), (240, 86237), (249, 83120), (332, 62340), (415, 49872), (498, 41560), (664, 31170), (830, 24936), (996, 20780), (1039, 19920), (1245, 16624), (1328, 15585), (1660, 12468), (1992, 10390), (2078, 9960), (2490, 8312), (3117, 6640), (3320, 6234), (3984, 5195), (4156, 4980)]