638228248

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1\times {\mathrm{853}}^1$

素因数の和:1328

約数の個数: 64

約数和(自身を含む): 1416683520

約数和(自身を除く): 778455272

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 431, 434, 853, 862, 868, 1706, 1724, 1736, 3017, 3412, 3448, 5971, 6034, 6824, 11942, 12068, 13361, 23884, 24136, 26443, 26722, 47768, 52886, 53444, 93527, 105772, 106888, 185101, 187054, 211544, 367643, 370202, 374108, 735286, 740404, 748216, 1470572, 1480808, 2573501, 2941144, 5147002, 10294004, 11396933, 20588008, 22793866, 45587732, 79778531, 91175464, 159557062, 319114124, 638228248]

約数ペア:

[(1, 638228248), (2, 319114124), (4, 159557062), (7, 91175464), (8, 79778531), (14, 45587732), (28, 22793866), (31, 20588008), (56, 11396933), (62, 10294004), (124, 5147002), (217, 2941144), (248, 2573501), (431, 1480808), (434, 1470572), (853, 748216), (862, 740404), (868, 735286), (1706, 374108), (1724, 370202), (1736, 367643), (3017, 211544), (3412, 187054), (3448, 185101), (5971, 106888), (6034, 105772), (6824, 93527), (11942, 53444), (12068, 52886), (13361, 47768), (23884, 26722), (24136, 26443)]