3947920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:883

約数の個数: 40

約数和(自身を含む): 9340920

約数和(自身を除く): 5393000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 809, 976, 1220, 1618, 2440, 3236, 4045, 4880, 6472, 8090, 12944, 16180, 32360, 49349, 64720, 98698, 197396, 246745, 394792, 493490, 789584, 986980, 1973960, 3947920]

約数ペア:

[(1, 3947920), (2, 1973960), (4, 986980), (5, 789584), (8, 493490), (10, 394792), (16, 246745), (20, 197396), (40, 98698), (61, 64720), (80, 49349), (122, 32360), (244, 16180), (305, 12944), (488, 8090), (610, 6472), (809, 4880), (976, 4045), (1220, 3236), (1618, 2440)]