78105620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:1020

約数の個数: 48

約数和(自身を含む): 169187088

約数和(自身を除く): 91081468

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 146, 244, 292, 305, 365, 610, 730, 877, 1220, 1460, 1754, 3508, 4385, 4453, 8770, 8906, 17540, 17812, 22265, 44530, 53497, 64021, 89060, 106994, 128042, 213988, 256084, 267485, 320105, 534970, 640210, 1069940, 1280420, 3905281, 7810562, 15621124, 19526405, 39052810, 78105620]

約数ペア:

[(1, 78105620), (2, 39052810), (4, 19526405), (5, 15621124), (10, 7810562), (20, 3905281), (61, 1280420), (73, 1069940), (122, 640210), (146, 534970), (244, 320105), (292, 267485), (305, 256084), (365, 213988), (610, 128042), (730, 106994), (877, 89060), (1220, 64021), (1460, 53497), (1754, 44530), (3508, 22265), (4385, 17812), (4453, 17540), (8770, 8906)]