12878450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19813}}^1$

素因数の和:19838

約数の個数: 24

約数和(自身を含む): 25797828

約数和(自身を除く): 12919378

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 19813, 39626, 99065, 198130, 257569, 495325, 515138, 990650, 1287845, 2575690, 6439225, 12878450]

約数ペア:

[(1, 12878450), (2, 6439225), (5, 2575690), (10, 1287845), (13, 990650), (25, 515138), (26, 495325), (50, 257569), (65, 198130), (130, 99065), (325, 39626), (650, 19813)]