664545980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{279221}}^1$

素因数の和:279254

約数の個数: 48

約数和(自身を含む): 1688734656

約数和(自身を除く): 1024188676

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 279221, 558442, 1116884, 1396105, 1954547, 2792210, 3909094, 4746757, 5584420, 7818188, 9493514, 9772735, 18987028, 19545470, 23733785, 33227299, 39090940, 47467570, 66454598, 94935140, 132909196, 166136495, 332272990, 664545980]

約数ペア:

[(1, 664545980), (2, 332272990), (4, 166136495), (5, 132909196), (7, 94935140), (10, 66454598), (14, 47467570), (17, 39090940), (20, 33227299), (28, 23733785), (34, 19545470), (35, 18987028), (68, 9772735), (70, 9493514), (85, 7818188), (119, 5584420), (140, 4746757), (170, 3909094), (238, 2792210), (340, 1954547), (476, 1396105), (595, 1116884), (1190, 558442), (2380, 279221)]