204319220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{208489}}^1$

素因数の和:208512

約数の個数: 36

約数和(自身を含む): 499125060

約数和(自身を除く): 294805840

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 208489, 416978, 833956, 1042445, 1459423, 2084890, 2918846, 4169780, 5837692, 7297115, 10215961, 14594230, 20431922, 29188460, 40863844, 51079805, 102159610, 204319220]

約数ペア:

[(1, 204319220), (2, 102159610), (4, 51079805), (5, 40863844), (7, 29188460), (10, 20431922), (14, 14594230), (20, 10215961), (28, 7297115), (35, 5837692), (49, 4169780), (70, 2918846), (98, 2084890), (140, 1459423), (196, 1042445), (245, 833956), (490, 416978), (980, 208489)]