20155460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77521}}^1$

素因数の和:77543

約数の個数: 24

約数和(自身を含む): 45582936

約数和(自身を除く): 25427476

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77521, 155042, 310084, 387605, 775210, 1007773, 1550420, 2015546, 4031092, 5038865, 10077730, 20155460]

約数ペア:

[(1, 20155460), (2, 10077730), (4, 5038865), (5, 4031092), (10, 2015546), (13, 1550420), (20, 1007773), (26, 775210), (52, 387605), (65, 310084), (130, 155042), (260, 77521)]