21725912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{659}}^1$

素因数の和:995

約数の個数: 32

約数和(自身を含む): 44074800

約数和(自身を除く): 22348888

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 317, 634, 659, 1268, 1318, 2536, 2636, 4121, 5272, 8242, 8567, 16484, 17134, 32968, 34268, 68536, 208903, 417806, 835612, 1671224, 2715739, 5431478, 10862956, 21725912]

約数ペア:

[(1, 21725912), (2, 10862956), (4, 5431478), (8, 2715739), (13, 1671224), (26, 835612), (52, 417806), (104, 208903), (317, 68536), (634, 34268), (659, 32968), (1268, 17134), (1318, 16484), (2536, 8567), (2636, 8242), (4121, 5272)]