278804578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{227}}^1\times {\mathrm{487}}^1$

素因数の和:826

約数の個数: 32

約数和(自身を含む): 457962624

約数和(自身を除く): 179158046

約数列:

[1, 2, 13, 26, 97, 194, 227, 454, 487, 974, 1261, 2522, 2951, 5902, 6331, 12662, 22019, 44038, 47239, 94478, 110549, 221098, 286247, 572494, 614107, 1228214, 1437137, 2874274, 10723253, 21446506, 139402289, 278804578]

約数ペア:

[(1, 278804578), (2, 139402289), (13, 21446506), (26, 10723253), (97, 2874274), (194, 1437137), (227, 1228214), (454, 614107), (487, 572494), (974, 286247), (1261, 221098), (2522, 110549), (2951, 94478), (5902, 47239), (6331, 44038), (12662, 22019)]