28353325

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 48024704

約数和(自身を除く): 19671379

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 103, 121, 143, 175, 275, 325, 385, 455, 515, 605, 715, 721, 847, 1001, 1133, 1339, 1573, 1925, 2275, 2575, 3025, 3575, 3605, 4235, 5005, 5665, 6695, 7865, 7931, 9373, 11011, 12463, 14729, 18025, 21175, 25025, 28325, 33475, 39325, 39655, 46865, 55055, 62315, 73645, 87241, 103103, 162019, 198275, 234325, 275275, 311575, 368225, 436205, 515515, 810095, 1134133, 2181025, 2577575, 4050475, 5670665, 28353325]

約数ペア:

[(1, 28353325), (5, 5670665), (7, 4050475), (11, 2577575), (13, 2181025), (25, 1134133), (35, 810095), (55, 515515), (65, 436205), (77, 368225), (91, 311575), (103, 275275), (121, 234325), (143, 198275), (175, 162019), (275, 103103), (325, 87241), (385, 73645), (455, 62315), (515, 55055), (605, 46865), (715, 39655), (721, 39325), (847, 33475), (1001, 28325), (1133, 25025), (1339, 21175), (1573, 18025), (1925, 14729), (2275, 12463), (2575, 11011), (3025, 9373), (3575, 7931), (3605, 7865), (4235, 6695), (5005, 5665)]