21000503495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1471}}^1\times {\mathrm{3169}}^1$

素因数の和:4715

約数の個数: 32

約数和(自身を含む): 27213511680

約数和(自身を除く): 6213008185

約数列:

[1, 5, 17, 53, 85, 265, 901, 1471, 3169, 4505, 7355, 15845, 25007, 53873, 77963, 125035, 167957, 269365, 389815, 839785, 1325371, 2855269, 4661599, 6626855, 14276345, 23307995, 79247183, 247064747, 396235915, 1235323735, 4200100699, 21000503495]

約数ペア:

[(1, 21000503495), (5, 4200100699), (17, 1235323735), (53, 396235915), (85, 247064747), (265, 79247183), (901, 23307995), (1471, 14276345), (3169, 6626855), (4505, 4661599), (7355, 2855269), (15845, 1325371), (25007, 839785), (53873, 389815), (77963, 269365), (125035, 167957)]