21718681420

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{383}}^1\times {\mathrm{8171}}^1$

素因数の和:8910

約数の個数: 48

約数和(自身を含む): 45865709568

約数和(自身を除く): 24147028148

約数列:

[1, 2, 4, 5, 10, 20, 347, 383, 694, 766, 1388, 1532, 1735, 1915, 3470, 3830, 6940, 7660, 8171, 16342, 32684, 40855, 81710, 132901, 163420, 265802, 531604, 664505, 1329010, 2658020, 2835337, 3129493, 5670674, 6258986, 11341348, 12517972, 14176685, 15647465, 28353370, 31294930, 56706740, 62589860, 1085934071, 2171868142, 4343736284, 5429670355, 10859340710, 21718681420]

約数ペア:

[(1, 21718681420), (2, 10859340710), (4, 5429670355), (5, 4343736284), (10, 2171868142), (20, 1085934071), (347, 62589860), (383, 56706740), (694, 31294930), (766, 28353370), (1388, 15647465), (1532, 14176685), (1735, 12517972), (1915, 11341348), (3470, 6258986), (3830, 5670674), (6940, 3129493), (7660, 2835337), (8171, 2658020), (16342, 1329010), (32684, 664505), (40855, 531604), (81710, 265802), (132901, 163420)]