12989460520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3215213}}^1$

素因数の和:3215325

約数の個数: 32

約数和(自身を含む): 29515664520

約数和(自身を除く): 16526204000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 3215213, 6430426, 12860852, 16076065, 25721704, 32152130, 64304260, 128608520, 324736513, 649473026, 1298946052, 1623682565, 2597892104, 3247365130, 6494730260, 12989460520]

約数ペア:

[(1, 12989460520), (2, 6494730260), (4, 3247365130), (5, 2597892104), (8, 1623682565), (10, 1298946052), (20, 649473026), (40, 324736513), (101, 128608520), (202, 64304260), (404, 32152130), (505, 25721704), (808, 16076065), (1010, 12860852), (2020, 6430426), (4040, 3215213)]