20709480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:595

約数の個数: 128

約数和(自身を含む): 70243200

約数和(自身を除く): 49533720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 29, 30, 33, 40, 44, 55, 58, 60, 66, 87, 88, 110, 116, 120, 132, 145, 165, 174, 220, 232, 264, 290, 319, 330, 348, 435, 440, 541, 580, 638, 660, 696, 870, 957, 1082, 1160, 1276, 1320, 1595, 1623, 1740, 1914, 2164, 2552, 2705, 3190, 3246, 3480, 3828, 4328, 4785, 5410, 5951, 6380, 6492, 7656, 8115, 9570, 10820, 11902, 12760, 12984, 15689, 16230, 17853, 19140, 21640, 23804, 29755, 31378, 32460, 35706, 38280, 47067, 47608, 59510, 62756, 64920, 71412, 78445, 89265, 94134, 119020, 125512, 142824, 156890, 172579, 178530, 188268, 235335, 238040, 313780, 345158, 357060, 376536, 470670, 517737, 627560, 690316, 714120, 862895, 941340, 1035474, 1380632, 1725790, 1882680, 2070948, 2588685, 3451580, 4141896, 5177370, 6903160, 10354740, 20709480]

約数ペア:

[(1, 20709480), (2, 10354740), (3, 6903160), (4, 5177370), (5, 4141896), (6, 3451580), (8, 2588685), (10, 2070948), (11, 1882680), (12, 1725790), (15, 1380632), (20, 1035474), (22, 941340), (24, 862895), (29, 714120), (30, 690316), (33, 627560), (40, 517737), (44, 470670), (55, 376536), (58, 357060), (60, 345158), (66, 313780), (87, 238040), (88, 235335), (110, 188268), (116, 178530), (120, 172579), (132, 156890), (145, 142824), (165, 125512), (174, 119020), (220, 94134), (232, 89265), (264, 78445), (290, 71412), (319, 64920), (330, 62756), (348, 59510), (435, 47608), (440, 47067), (541, 38280), (580, 35706), (638, 32460), (660, 31378), (696, 29755), (870, 23804), (957, 21640), (1082, 19140), (1160, 17853), (1276, 16230), (1320, 15689), (1595, 12984), (1623, 12760), (1740, 11902), (1914, 10820), (2164, 9570), (2552, 8115), (2705, 7656), (3190, 6492), (3246, 6380), (3480, 5951), (3828, 5410), (4328, 4785)]