278922020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{4079}}^1$

素因数の和:4364

約数の個数: 48

約数和(自身を含む): 633346560

約数和(自身を除く): 354424540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 263, 526, 1052, 1315, 2630, 3419, 4079, 5260, 6838, 8158, 13676, 16316, 17095, 20395, 34190, 40790, 53027, 68380, 81580, 106054, 212108, 265135, 530270, 1060540, 1072777, 2145554, 4291108, 5363885, 10727770, 13946101, 21455540, 27892202, 55784404, 69730505, 139461010, 278922020]

約数ペア:

[(1, 278922020), (2, 139461010), (4, 69730505), (5, 55784404), (10, 27892202), (13, 21455540), (20, 13946101), (26, 10727770), (52, 5363885), (65, 4291108), (130, 2145554), (260, 1072777), (263, 1060540), (526, 530270), (1052, 265135), (1315, 212108), (2630, 106054), (3419, 81580), (4079, 68380), (5260, 53027), (6838, 40790), (8158, 34190), (13676, 20395), (16316, 17095)]