28455920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:322

約数の個数: 80

約数和(自身を含む): 70724640

約数和(自身を除く): 42268720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 97, 152, 190, 193, 194, 304, 380, 386, 388, 485, 760, 772, 776, 965, 970, 1520, 1544, 1552, 1843, 1930, 1940, 3088, 3667, 3686, 3860, 3880, 7334, 7372, 7720, 7760, 9215, 14668, 14744, 15440, 18335, 18430, 18721, 29336, 29488, 36670, 36860, 37442, 58672, 73340, 73720, 74884, 93605, 146680, 147440, 149768, 187210, 293360, 299536, 355699, 374420, 711398, 748840, 1422796, 1497680, 1778495, 2845592, 3556990, 5691184, 7113980, 14227960, 28455920]

約数ペア:

[(1, 28455920), (2, 14227960), (4, 7113980), (5, 5691184), (8, 3556990), (10, 2845592), (16, 1778495), (19, 1497680), (20, 1422796), (38, 748840), (40, 711398), (76, 374420), (80, 355699), (95, 299536), (97, 293360), (152, 187210), (190, 149768), (193, 147440), (194, 146680), (304, 93605), (380, 74884), (386, 73720), (388, 73340), (485, 58672), (760, 37442), (772, 36860), (776, 36670), (965, 29488), (970, 29336), (1520, 18721), (1544, 18430), (1552, 18335), (1843, 15440), (1930, 14744), (1940, 14668), (3088, 9215), (3667, 7760), (3686, 7720), (3860, 7372), (3880, 7334)]