4420840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1399}}^1$

素因数の和:1489

約数の個数: 32

約数和(自身を含む): 10080000

約数和(自身を除く): 5659160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1399, 1580, 2798, 3160, 5596, 6995, 11192, 13990, 27980, 55960, 110521, 221042, 442084, 552605, 884168, 1105210, 2210420, 4420840]

約数ペア:

[(1, 4420840), (2, 2210420), (4, 1105210), (5, 884168), (8, 552605), (10, 442084), (20, 221042), (40, 110521), (79, 55960), (158, 27980), (316, 13990), (395, 11192), (632, 6995), (790, 5596), (1399, 3160), (1580, 2798)]