20649360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{887}}^1$

素因数の和:1000

約数の個数: 80

約数和(自身を含む): 64745856

約数和(自身を除く): 44096496

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 887, 970, 1164, 1455, 1552, 1774, 1940, 2328, 2661, 2910, 3548, 3880, 4435, 4656, 5322, 5820, 7096, 7760, 8870, 10644, 11640, 13305, 14192, 17740, 21288, 23280, 26610, 35480, 42576, 53220, 70960, 86039, 106440, 172078, 212880, 258117, 344156, 430195, 516234, 688312, 860390, 1032468, 1290585, 1376624, 1720780, 2064936, 2581170, 3441560, 4129872, 5162340, 6883120, 10324680, 20649360]

約数ペア:

[(1, 20649360), (2, 10324680), (3, 6883120), (4, 5162340), (5, 4129872), (6, 3441560), (8, 2581170), (10, 2064936), (12, 1720780), (15, 1376624), (16, 1290585), (20, 1032468), (24, 860390), (30, 688312), (40, 516234), (48, 430195), (60, 344156), (80, 258117), (97, 212880), (120, 172078), (194, 106440), (240, 86039), (291, 70960), (388, 53220), (485, 42576), (582, 35480), (776, 26610), (887, 23280), (970, 21288), (1164, 17740), (1455, 14192), (1552, 13305), (1774, 11640), (1940, 10644), (2328, 8870), (2661, 7760), (2910, 7096), (3548, 5820), (3880, 5322), (4435, 4656)]