258397490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1987673}}^1$

素因数の和:1987693

約数の個数: 16

約数和(自身を含む): 500893848

約数和(自身を除く): 242496358

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 1987673, 3975346, 9938365, 19876730, 25839749, 51679498, 129198745, 258397490]

約数ペア:

[(1, 258397490), (2, 129198745), (5, 51679498), (10, 25839749), (13, 19876730), (26, 9938365), (65, 3975346), (130, 1987673)]