217980250

素因数分解:

$2^1\times 5^3\times {\mathrm{887}}^1\times {\mathrm{983}}^1$

素因数の和:1887

約数の個数: 32

約数和(自身を含む): 408934656

約数和(自身を除く): 190954406

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 887, 983, 1774, 1966, 4435, 4915, 8870, 9830, 22175, 24575, 44350, 49150, 110875, 122875, 221750, 245750, 871921, 1743842, 4359605, 8719210, 21798025, 43596050, 108990125, 217980250]

約数ペア:

[(1, 217980250), (2, 108990125), (5, 43596050), (10, 21798025), (25, 8719210), (50, 4359605), (125, 1743842), (250, 871921), (887, 245750), (983, 221750), (1774, 122875), (1966, 110875), (4435, 49150), (4915, 44350), (8870, 24575), (9830, 22175)]