640457460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{122693}}^1$

素因数の和:122737

約数の個数: 72

約数和(自身を含む): 2009727720

約数和(自身を除く): 1369270260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 122693, 245386, 368079, 490772, 613465, 736158, 1104237, 1226930, 1472316, 1840395, 2208474, 2453860, 3558097, 3680790, 4416948, 5521185, 7116194, 7361580, 10674291, 11042370, 14232388, 17790485, 21348582, 22084740, 32022873, 35580970, 42697164, 53371455, 64045746, 71161940, 106742910, 128091492, 160114365, 213485820, 320228730, 640457460]

約数ペア:

[(1, 640457460), (2, 320228730), (3, 213485820), (4, 160114365), (5, 128091492), (6, 106742910), (9, 71161940), (10, 64045746), (12, 53371455), (15, 42697164), (18, 35580970), (20, 32022873), (29, 22084740), (30, 21348582), (36, 17790485), (45, 14232388), (58, 11042370), (60, 10674291), (87, 7361580), (90, 7116194), (116, 5521185), (145, 4416948), (174, 3680790), (180, 3558097), (261, 2453860), (290, 2208474), (348, 1840395), (435, 1472316), (522, 1226930), (580, 1104237), (870, 736158), (1044, 613465), (1305, 490772), (1740, 368079), (2610, 245386), (5220, 122693)]