20129002689

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1\times {\mathrm{647}}^1\times {\mathrm{661}}^1$

素因数の和:1881

約数の個数: 32

約数和(自身を含む): 27900599040

約数和(自身を除く): 7771596351

約数列:

[1, 3, 29, 87, 541, 647, 661, 1623, 1941, 1983, 15689, 18763, 19169, 47067, 56289, 57507, 350027, 357601, 427667, 1050081, 1072803, 1283001, 10150783, 10370429, 12402343, 30452349, 31111287, 37207029, 231367847, 694103541, 6709667563, 20129002689]

約数ペア:

[(1, 20129002689), (3, 6709667563), (29, 694103541), (87, 231367847), (541, 37207029), (647, 31111287), (661, 30452349), (1623, 12402343), (1941, 10370429), (1983, 10150783), (15689, 1283001), (18763, 1072803), (19169, 1050081), (47067, 427667), (56289, 357601), (57507, 350027)]