20147140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77489}}^1$

素因数の和:77511

約数の個数: 24

約数和(自身を含む): 45564120

約数和(自身を除く): 25416980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77489, 154978, 309956, 387445, 774890, 1007357, 1549780, 2014714, 4029428, 5036785, 10073570, 20147140]

約数ペア:

[(1, 20147140), (2, 10073570), (4, 5036785), (5, 4029428), (10, 2014714), (13, 1549780), (20, 1007357), (26, 774890), (52, 387445), (65, 309956), (130, 154978), (260, 77489)]