20188779

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 30772224

約数和(自身を除く): 10583445

約数列:

[1, 3, 13, 23, 39, 69, 71, 213, 299, 317, 897, 923, 951, 1633, 2769, 4121, 4899, 7291, 12363, 21229, 21873, 22507, 63687, 67521, 94783, 284349, 292591, 517661, 877773, 1552983, 6729593, 20188779]

約数ペア:

[(1, 20188779), (3, 6729593), (13, 1552983), (23, 877773), (39, 517661), (69, 292591), (71, 284349), (213, 94783), (299, 67521), (317, 63687), (897, 22507), (923, 21873), (951, 21229), (1633, 12363), (2769, 7291), (4121, 4899)]