156921680

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19421}}^1$

素因数の和:19535

約数の個数: 40

約数和(自身を含む): 368474184

約数和(自身を除く): 211552504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 19421, 38842, 77684, 97105, 155368, 194210, 310736, 388420, 776840, 1553680, 1961521, 3923042, 7846084, 9807605, 15692168, 19615210, 31384336, 39230420, 78460840, 156921680]

約数ペア:

[(1, 156921680), (2, 78460840), (4, 39230420), (5, 31384336), (8, 19615210), (10, 15692168), (16, 9807605), (20, 7846084), (40, 3923042), (80, 1961521), (101, 1553680), (202, 776840), (404, 388420), (505, 310736), (808, 194210), (1010, 155368), (1616, 97105), (2020, 77684), (4040, 38842), (8080, 19421)]