131567120

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4021}}^1$

素因数の和:4443

約数の個数: 40

約数和(自身を含む): 306717720

約数和(自身を除く): 175150600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4021, 4090, 6544, 8042, 8180, 16084, 16360, 20105, 32168, 32720, 40210, 64336, 80420, 160840, 321680, 1644589, 3289178, 6578356, 8222945, 13156712, 16445890, 26313424, 32891780, 65783560, 131567120]

約数ペア:

[(1, 131567120), (2, 65783560), (4, 32891780), (5, 26313424), (8, 16445890), (10, 13156712), (16, 8222945), (20, 6578356), (40, 3289178), (80, 1644589), (409, 321680), (818, 160840), (1636, 80420), (2045, 64336), (3272, 40210), (4021, 32720), (4090, 32168), (6544, 20105), (8042, 16360), (8180, 16084)]