20295275

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:852

約数の個数: 48

約数和(自身を含む): 33831168

約数和(自身を除く): 13535893

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 143, 175, 275, 325, 385, 455, 715, 811, 1001, 1925, 2275, 3575, 4055, 5005, 5677, 8921, 10543, 20275, 25025, 28385, 44605, 52715, 62447, 73801, 115973, 141925, 223025, 263575, 312235, 369005, 579865, 811811, 1561175, 1845025, 2899325, 4059055, 20295275]

約数ペア:

[(1, 20295275), (5, 4059055), (7, 2899325), (11, 1845025), (13, 1561175), (25, 811811), (35, 579865), (55, 369005), (65, 312235), (77, 263575), (91, 223025), (143, 141925), (175, 115973), (275, 73801), (325, 62447), (385, 52715), (455, 44605), (715, 28385), (811, 25025), (1001, 20275), (1925, 10543), (2275, 8921), (3575, 5677), (4055, 5005)]