16564756820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{247309}}^1$

素因数の和:247532

約数の個数: 48

約数和(自身を含む): 37019339280

約数和(自身を除く): 20454582460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 340, 394, 788, 985, 1970, 3349, 3940, 6698, 13396, 16745, 33490, 66980, 247309, 494618, 989236, 1236545, 2473090, 4204253, 4946180, 8408506, 16817012, 21021265, 42042530, 48719873, 84085060, 97439746, 194879492, 243599365, 487198730, 828237841, 974397460, 1656475682, 3312951364, 4141189205, 8282378410, 16564756820]

約数ペア:

[(1, 16564756820), (2, 8282378410), (4, 4141189205), (5, 3312951364), (10, 1656475682), (17, 974397460), (20, 828237841), (34, 487198730), (68, 243599365), (85, 194879492), (170, 97439746), (197, 84085060), (340, 48719873), (394, 42042530), (788, 21021265), (985, 16817012), (1970, 8408506), (3349, 4946180), (3940, 4204253), (6698, 2473090), (13396, 1236545), (16745, 989236), (33490, 494618), (66980, 247309)]