51488440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 119556000

約数和(自身を除く): 68067560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 149, 163, 212, 265, 298, 326, 424, 530, 596, 652, 745, 815, 1060, 1192, 1304, 1490, 1630, 2120, 2980, 3260, 5960, 6520, 7897, 8639, 15794, 17278, 24287, 31588, 34556, 39485, 43195, 48574, 63176, 69112, 78970, 86390, 97148, 121435, 157940, 172780, 194296, 242870, 315880, 345560, 485740, 971480, 1287211, 2574422, 5148844, 6436055, 10297688, 12872110, 25744220, 51488440]

約数ペア:

[(1, 51488440), (2, 25744220), (4, 12872110), (5, 10297688), (8, 6436055), (10, 5148844), (20, 2574422), (40, 1287211), (53, 971480), (106, 485740), (149, 345560), (163, 315880), (212, 242870), (265, 194296), (298, 172780), (326, 157940), (424, 121435), (530, 97148), (596, 86390), (652, 78970), (745, 69112), (815, 63176), (1060, 48574), (1192, 43195), (1304, 39485), (1490, 34556), (1630, 31588), (2120, 24287), (2980, 17278), (3260, 15794), (5960, 8639), (6520, 7897)]