21971290180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{947}}^1\times {\mathrm{165721}}^1$

素因数の和:166684

約数の個数: 48

約数和(自身を含む): 52787097216

約数和(自身を除く): 30815807036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 947, 1894, 3788, 4735, 6629, 9470, 13258, 18940, 26516, 33145, 66290, 132580, 165721, 331442, 662884, 828605, 1160047, 1657210, 2320094, 3314420, 4640188, 5800235, 11600470, 23200940, 156937787, 313875574, 627751148, 784688935, 1098564509, 1569377870, 2197129018, 3138755740, 4394258036, 5492822545, 10985645090, 21971290180]

約数ペア:

[(1, 21971290180), (2, 10985645090), (4, 5492822545), (5, 4394258036), (7, 3138755740), (10, 2197129018), (14, 1569377870), (20, 1098564509), (28, 784688935), (35, 627751148), (70, 313875574), (140, 156937787), (947, 23200940), (1894, 11600470), (3788, 5800235), (4735, 4640188), (6629, 3314420), (9470, 2320094), (13258, 1657210), (18940, 1160047), (26516, 828605), (33145, 662884), (66290, 331442), (132580, 165721)]