397360420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{20089}}^1$

素因数の和:20164

約数の個数: 48

約数和(自身を含む): 891031680

約数和(自身を除く): 493671260

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1978, 3956, 4945, 9890, 19780, 20089, 40178, 80356, 100445, 200890, 401780, 462047, 863827, 924094, 1727654, 1848188, 2310235, 3455308, 4319135, 4620470, 8638270, 9240940, 17276540, 19868021, 39736042, 79472084, 99340105, 198680210, 397360420]

約数ペア:

[(1, 397360420), (2, 198680210), (4, 99340105), (5, 79472084), (10, 39736042), (20, 19868021), (23, 17276540), (43, 9240940), (46, 8638270), (86, 4620470), (92, 4319135), (115, 3455308), (172, 2310235), (215, 1848188), (230, 1727654), (430, 924094), (460, 863827), (860, 462047), (989, 401780), (1978, 200890), (3956, 100445), (4945, 80356), (9890, 40178), (19780, 20089)]