18116725

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 25381188

約数和(自身を除く): 7264463

約数列:

[1, 5, 11, 25, 53, 55, 113, 121, 265, 275, 565, 583, 605, 1243, 1325, 2825, 2915, 3025, 5989, 6215, 6413, 13673, 14575, 29945, 31075, 32065, 65879, 68365, 149725, 160325, 329395, 341825, 724669, 1646975, 3623345, 18116725]

約数ペア:

[(1, 18116725), (5, 3623345), (11, 1646975), (25, 724669), (53, 341825), (55, 329395), (113, 160325), (121, 149725), (265, 68365), (275, 65879), (565, 32065), (583, 31075), (605, 29945), (1243, 14575), (1325, 13673), (2825, 6413), (2915, 6215), (3025, 5989)]