21678904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1399}}^1$

素因数の和:1567

約数の個数: 32

約数和(自身を含む): 44100000

約数和(自身を除く): 22421096

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 149, 298, 596, 1192, 1399, 1937, 2798, 3874, 5596, 7748, 11192, 15496, 18187, 36374, 72748, 145496, 208451, 416902, 833804, 1667608, 2709863, 5419726, 10839452, 21678904]

約数ペア:

[(1, 21678904), (2, 10839452), (4, 5419726), (8, 2709863), (13, 1667608), (26, 833804), (52, 416902), (104, 208451), (149, 145496), (298, 72748), (596, 36374), (1192, 18187), (1399, 15496), (1937, 11192), (2798, 7748), (3874, 5596)]