18436720

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{727}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 43059744

約数和(自身を除く): 24623024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 727, 1268, 1454, 1585, 2536, 2908, 3170, 3635, 5072, 5816, 6340, 7270, 11632, 12680, 14540, 25360, 29080, 58160, 230459, 460918, 921836, 1152295, 1843672, 2304590, 3687344, 4609180, 9218360, 18436720]

約数ペア:

[(1, 18436720), (2, 9218360), (4, 4609180), (5, 3687344), (8, 2304590), (10, 1843672), (16, 1152295), (20, 921836), (40, 460918), (80, 230459), (317, 58160), (634, 29080), (727, 25360), (1268, 14540), (1454, 12680), (1585, 11632), (2536, 7270), (2908, 6340), (3170, 5816), (3635, 5072)]