7851920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1609}}^1$

素因数の和:1683

約数の個数: 40

約数和(自身を含む): 18566520

約数和(自身を除く): 10714600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 1609, 2440, 3218, 4880, 6436, 8045, 12872, 16090, 25744, 32180, 64360, 98149, 128720, 196298, 392596, 490745, 785192, 981490, 1570384, 1962980, 3925960, 7851920]

約数ペア:

[(1, 7851920), (2, 3925960), (4, 1962980), (5, 1570384), (8, 981490), (10, 785192), (16, 490745), (20, 392596), (40, 196298), (61, 128720), (80, 98149), (122, 64360), (244, 32180), (305, 25744), (488, 16090), (610, 12872), (976, 8045), (1220, 6436), (1609, 4880), (2440, 3218)]