78220280

素因数分解:

$2^3\times 5^1\times {\mathrm{1955507}}^1$

素因数の和:1955518

約数の個数: 16

約数和(自身を含む): 175995720

約数和(自身を除く): 97775440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1955507, 3911014, 7822028, 9777535, 15644056, 19555070, 39110140, 78220280]

約数ペア:

[(1, 78220280), (2, 39110140), (4, 19555070), (5, 15644056), (8, 9777535), (10, 7822028), (20, 3911014), (40, 1955507)]