13720040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4831}}^1$

素因数の和:4913

約数の個数: 32

約数和(自身を含む): 31311360

約数和(自身を除く): 17591320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4831, 9662, 19324, 24155, 38648, 48310, 96620, 193240, 343001, 686002, 1372004, 1715005, 2744008, 3430010, 6860020, 13720040]

約数ペア:

[(1, 13720040), (2, 6860020), (4, 3430010), (5, 2744008), (8, 1715005), (10, 1372004), (20, 686002), (40, 343001), (71, 193240), (142, 96620), (284, 48310), (355, 38648), (568, 24155), (710, 19324), (1420, 9662), (2840, 4831)]