872840

素因数分解:

$2^3\times 5^1\times {\mathrm{21821}}^1$

素因数の和:21832

約数の個数: 16

約数和(自身を含む): 1963980

約数和(自身を除く): 1091140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21821, 43642, 87284, 109105, 174568, 218210, 436420, 872840]

約数ペア:

[(1, 872840), (2, 436420), (4, 218210), (5, 174568), (8, 109105), (10, 87284), (20, 43642), (40, 21821)]