128575460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{494521}}^1$

素因数の和:494543

約数の個数: 24

約数和(自身を含む): 290778936

約数和(自身を除く): 162203476

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 494521, 989042, 1978084, 2472605, 4945210, 6428773, 9890420, 12857546, 25715092, 32143865, 64287730, 128575460]

約数ペア:

[(1, 128575460), (2, 64287730), (4, 32143865), (5, 25715092), (10, 12857546), (13, 9890420), (20, 6428773), (26, 4945210), (52, 2472605), (65, 1978084), (130, 989042), (260, 494521)]