20181460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77621}}^1$

素因数の和:77643

約数の個数: 24

約数和(自身を含む): 45641736

約数和(自身を除く): 25460276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77621, 155242, 310484, 388105, 776210, 1009073, 1552420, 2018146, 4036292, 5045365, 10090730, 20181460]

約数ペア:

[(1, 20181460), (2, 10090730), (4, 5045365), (5, 4036292), (10, 2018146), (13, 1552420), (20, 1009073), (26, 776210), (52, 388105), (65, 310484), (130, 155242), (260, 77621)]