20324980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78173}}^1$

素因数の和:78195

約数の個数: 24

約数和(自身を含む): 45966312

約数和(自身を除く): 25641332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78173, 156346, 312692, 390865, 781730, 1016249, 1563460, 2032498, 4064996, 5081245, 10162490, 20324980]

約数ペア:

[(1, 20324980), (2, 10162490), (4, 5081245), (5, 4064996), (10, 2032498), (13, 1563460), (20, 1016249), (26, 781730), (52, 390865), (65, 312692), (130, 156346), (260, 78173)]