18894980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72673}}^1$

素因数の和:72695

約数の個数: 24

約数和(自身を含む): 42732312

約数和(自身を除く): 23837332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72673, 145346, 290692, 363365, 726730, 944749, 1453460, 1889498, 3778996, 4723745, 9447490, 18894980]

約数ペア:

[(1, 18894980), (2, 9447490), (4, 4723745), (5, 3778996), (10, 1889498), (13, 1453460), (20, 944749), (26, 726730), (52, 363365), (65, 290692), (130, 145346), (260, 72673)]