19556420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75217}}^1$

素因数の和:75239

約数の個数: 24

約数和(自身を含む): 44228184

約数和(自身を除く): 24671764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75217, 150434, 300868, 376085, 752170, 977821, 1504340, 1955642, 3911284, 4889105, 9778210, 19556420]

約数ペア:

[(1, 19556420), (2, 9778210), (4, 4889105), (5, 3911284), (10, 1955642), (13, 1504340), (20, 977821), (26, 752170), (52, 376085), (65, 300868), (130, 150434), (260, 75217)]