20910968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3001}}^1$

素因数の和:3087

約数の個数: 32

約数和(自身を含む): 42868560

約数和(自身を除く): 21957592

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3001, 3484, 6002, 6968, 12004, 24008, 39013, 78026, 156052, 201067, 312104, 402134, 804268, 1608536, 2613871, 5227742, 10455484, 20910968]

約数ペア:

[(1, 20910968), (2, 10455484), (4, 5227742), (8, 2613871), (13, 1608536), (26, 804268), (52, 402134), (67, 312104), (104, 201067), (134, 156052), (268, 78026), (536, 39013), (871, 24008), (1742, 12004), (3001, 6968), (3484, 6002)]