678449320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{2753}}^1$

素因数の和:2926

約数の個数: 64

約数和(自身を含む): 1567466640

約数和(自身を除く): 889017320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 101, 122, 202, 244, 305, 404, 488, 505, 610, 808, 1010, 1220, 2020, 2440, 2753, 4040, 5506, 6161, 11012, 12322, 13765, 22024, 24644, 27530, 30805, 49288, 55060, 61610, 110120, 123220, 167933, 246440, 278053, 335866, 556106, 671732, 839665, 1112212, 1343464, 1390265, 1679330, 2224424, 2780530, 3358660, 5561060, 6717320, 11122120, 16961233, 33922466, 67844932, 84806165, 135689864, 169612330, 339224660, 678449320]

約数ペア:

[(1, 678449320), (2, 339224660), (4, 169612330), (5, 135689864), (8, 84806165), (10, 67844932), (20, 33922466), (40, 16961233), (61, 11122120), (101, 6717320), (122, 5561060), (202, 3358660), (244, 2780530), (305, 2224424), (404, 1679330), (488, 1390265), (505, 1343464), (610, 1112212), (808, 839665), (1010, 671732), (1220, 556106), (2020, 335866), (2440, 278053), (2753, 246440), (4040, 167933), (5506, 123220), (6161, 110120), (11012, 61610), (12322, 55060), (13765, 49288), (22024, 30805), (24644, 27530)]