28744625

素因数分解:

$5^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2$

素因数の和:80

約数の個数: 72

約数和(自身を含む): 47429928

約数和(自身を除く): 18685303

約数列:

[1, 5, 7, 13, 19, 25, 35, 49, 65, 91, 95, 125, 133, 175, 245, 247, 325, 361, 455, 475, 637, 665, 875, 931, 1225, 1235, 1625, 1729, 1805, 2275, 2375, 2527, 3185, 3325, 4655, 4693, 6125, 6175, 8645, 9025, 11375, 12103, 12635, 15925, 16625, 17689, 23275, 23465, 30875, 32851, 43225, 45125, 60515, 63175, 79625, 88445, 116375, 117325, 164255, 216125, 229957, 302575, 315875, 442225, 586625, 821275, 1149785, 1512875, 2211125, 4106375, 5748925, 28744625]

約数ペア:

[(1, 28744625), (5, 5748925), (7, 4106375), (13, 2211125), (19, 1512875), (25, 1149785), (35, 821275), (49, 586625), (65, 442225), (91, 315875), (95, 302575), (125, 229957), (133, 216125), (175, 164255), (245, 117325), (247, 116375), (325, 88445), (361, 79625), (455, 63175), (475, 60515), (637, 45125), (665, 43225), (875, 32851), (931, 30875), (1225, 23465), (1235, 23275), (1625, 17689), (1729, 16625), (1805, 15925), (2275, 12635), (2375, 12103), (2527, 11375), (3185, 9025), (3325, 8645), (4655, 6175), (4693, 6125)]