128819360

素因数分解:

$2^5\times 5^1\times {\mathrm{805121}}^1$

素因数の和:805136

約数の個数: 24

約数和(自身を含む): 304336116

約数和(自身を除く): 175516756

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 805121, 1610242, 3220484, 4025605, 6440968, 8051210, 12881936, 16102420, 25763872, 32204840, 64409680, 128819360]

約数ペア:

[(1, 128819360), (2, 64409680), (4, 32204840), (5, 25763872), (8, 16102420), (10, 12881936), (16, 8051210), (20, 6440968), (32, 4025605), (40, 3220484), (80, 1610242), (160, 805121)]