28317575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^2$

素因数の和:212

約数の個数: 36

約数和(自身を含む): 41721288

約数和(自身を除く): 13403713

約数列:

[1, 5, 11, 13, 25, 55, 65, 89, 143, 275, 325, 445, 715, 979, 1157, 2225, 3575, 4895, 5785, 7921, 12727, 24475, 28925, 39605, 63635, 87131, 102973, 198025, 318175, 435655, 514865, 1132703, 2178275, 2574325, 5663515, 28317575]

約数ペア:

[(1, 28317575), (5, 5663515), (11, 2574325), (13, 2178275), (25, 1132703), (55, 514865), (65, 435655), (89, 318175), (143, 198025), (275, 102973), (325, 87131), (445, 63635), (715, 39605), (979, 28925), (1157, 24475), (2225, 12727), (3575, 7921), (4895, 5785)]