305648720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293893}}^1$

素因数の和:293919

約数の個数: 40

約数和(自身を含む): 765299976

約数和(自身を除く): 459651256

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 293893, 587786, 1175572, 1469465, 2351144, 2938930, 3820609, 4702288, 5877860, 7641218, 11755720, 15282436, 19103045, 23511440, 30564872, 38206090, 61129744, 76412180, 152824360, 305648720]

約数ペア:

[(1, 305648720), (2, 152824360), (4, 76412180), (5, 61129744), (8, 38206090), (10, 30564872), (13, 23511440), (16, 19103045), (20, 15282436), (26, 11755720), (40, 7641218), (52, 5877860), (65, 4702288), (80, 3820609), (104, 2938930), (130, 2351144), (208, 1469465), (260, 1175572), (520, 587786), (1040, 293893)]