8420840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6791}}^1$

素因数の和:6833

約数の個数: 32

約数和(自身を含む): 19560960

約数和(自身を除く): 11140120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 6791, 13582, 27164, 33955, 54328, 67910, 135820, 210521, 271640, 421042, 842084, 1052605, 1684168, 2105210, 4210420, 8420840]

約数ペア:

[(1, 8420840), (2, 4210420), (4, 2105210), (5, 1684168), (8, 1052605), (10, 842084), (20, 421042), (31, 271640), (40, 210521), (62, 135820), (124, 67910), (155, 54328), (248, 33955), (310, 27164), (620, 13582), (1240, 6791)]