28493720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 66355200

約数和(自身を除く): 37861480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 79, 127, 142, 158, 254, 284, 316, 355, 395, 508, 568, 632, 635, 710, 790, 1016, 1270, 1420, 1580, 2540, 2840, 3160, 5080, 5609, 9017, 10033, 11218, 18034, 20066, 22436, 28045, 36068, 40132, 44872, 45085, 50165, 56090, 72136, 80264, 90170, 100330, 112180, 180340, 200660, 224360, 360680, 401320, 712343, 1424686, 2849372, 3561715, 5698744, 7123430, 14246860, 28493720]

約数ペア:

[(1, 28493720), (2, 14246860), (4, 7123430), (5, 5698744), (8, 3561715), (10, 2849372), (20, 1424686), (40, 712343), (71, 401320), (79, 360680), (127, 224360), (142, 200660), (158, 180340), (254, 112180), (284, 100330), (316, 90170), (355, 80264), (395, 72136), (508, 56090), (568, 50165), (632, 45085), (635, 44872), (710, 40132), (790, 36068), (1016, 28045), (1270, 22436), (1420, 20066), (1580, 18034), (2540, 11218), (2840, 10033), (3160, 9017), (5080, 5609)]