21157552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101719}}^1$

素因数の和:101740

約数の個数: 20

約数和(自身を含む): 44146480

約数和(自身を除く): 22988928

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101719, 203438, 406876, 813752, 1322347, 1627504, 2644694, 5289388, 10578776, 21157552]

約数ペア:

[(1, 21157552), (2, 10578776), (4, 5289388), (8, 2644694), (13, 1627504), (16, 1322347), (26, 813752), (52, 406876), (104, 203438), (208, 101719)]