420796840

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{23747}}^1$

素因数の和:24201

約数の個数: 32

約数和(自身を含む): 948970080

約数和(自身を除く): 528173240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1772, 2215, 3544, 4430, 8860, 17720, 23747, 47494, 94988, 118735, 189976, 237470, 474940, 949880, 10519921, 21039842, 42079684, 52599605, 84159368, 105199210, 210398420, 420796840]

約数ペア:

[(1, 420796840), (2, 210398420), (4, 105199210), (5, 84159368), (8, 52599605), (10, 42079684), (20, 21039842), (40, 10519921), (443, 949880), (886, 474940), (1772, 237470), (2215, 189976), (3544, 118735), (4430, 94988), (8860, 47494), (17720, 23747)]