20388680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39209}}^1$

素因数の和:39233

約数の個数: 32

約数和(自身を含む): 49404600

約数和(自身を除く): 29015920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39209, 78418, 156836, 196045, 313672, 392090, 509717, 784180, 1019434, 1568360, 2038868, 2548585, 4077736, 5097170, 10194340, 20388680]

約数ペア:

[(1, 20388680), (2, 10194340), (4, 5097170), (5, 4077736), (8, 2548585), (10, 2038868), (13, 1568360), (20, 1019434), (26, 784180), (40, 509717), (52, 392090), (65, 313672), (104, 196045), (130, 156836), (260, 78418), (520, 39209)]