205151440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197261}}^1$

素因数の和:197287

約数の個数: 40

約数和(自身を含む): 513670248

約数和(自身を除く): 308518808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 197261, 394522, 789044, 986305, 1578088, 1972610, 2564393, 3156176, 3945220, 5128786, 7890440, 10257572, 12821965, 15780880, 20515144, 25643930, 41030288, 51287860, 102575720, 205151440]

約数ペア:

[(1, 205151440), (2, 102575720), (4, 51287860), (5, 41030288), (8, 25643930), (10, 20515144), (13, 15780880), (16, 12821965), (20, 10257572), (26, 7890440), (40, 5128786), (52, 3945220), (65, 3156176), (80, 2564393), (104, 1972610), (130, 1578088), (208, 986305), (260, 789044), (520, 394522), (1040, 197261)]