1387490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{821}}^1$

素因数の和:854

約数の個数: 24

約数和(自身を含む): 2707668

約数和(自身を除く): 1320178

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 821, 845, 1642, 1690, 4105, 8210, 10673, 21346, 53365, 106730, 138749, 277498, 693745, 1387490]

約数ペア:

[(1, 1387490), (2, 693745), (5, 277498), (10, 138749), (13, 106730), (26, 53365), (65, 21346), (130, 10673), (169, 8210), (338, 4105), (821, 1690), (845, 1642)]