400047440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{3529}}^1$

素因数の和:3664

約数の個数: 80

約数和(自身を含む): 1011133200

約数和(自身を除く): 611085760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 208, 218, 260, 436, 520, 545, 872, 1040, 1090, 1417, 1744, 2180, 2834, 3529, 4360, 5668, 7058, 7085, 8720, 11336, 14116, 14170, 17645, 22672, 28232, 28340, 35290, 45877, 56464, 56680, 70580, 91754, 113360, 141160, 183508, 229385, 282320, 367016, 384661, 458770, 734032, 769322, 917540, 1538644, 1835080, 1923305, 3077288, 3670160, 3846610, 5000593, 6154576, 7693220, 10001186, 15386440, 20002372, 25002965, 30772880, 40004744, 50005930, 80009488, 100011860, 200023720, 400047440]

約数ペア:

[(1, 400047440), (2, 200023720), (4, 100011860), (5, 80009488), (8, 50005930), (10, 40004744), (13, 30772880), (16, 25002965), (20, 20002372), (26, 15386440), (40, 10001186), (52, 7693220), (65, 6154576), (80, 5000593), (104, 3846610), (109, 3670160), (130, 3077288), (208, 1923305), (218, 1835080), (260, 1538644), (436, 917540), (520, 769322), (545, 734032), (872, 458770), (1040, 384661), (1090, 367016), (1417, 282320), (1744, 229385), (2180, 183508), (2834, 141160), (3529, 113360), (4360, 91754), (5668, 70580), (7058, 56680), (7085, 56464), (8720, 45877), (11336, 35290), (14116, 28340), (14170, 28232), (17645, 22672)]