18699280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5701}}^1$

素因数の和:5755

約数の個数: 40

約数和(自身を含む): 44544024

約数和(自身を除く): 25844744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5701, 11402, 22804, 28505, 45608, 57010, 91216, 114020, 228040, 233741, 456080, 467482, 934964, 1168705, 1869928, 2337410, 3739856, 4674820, 9349640, 18699280]

約数ペア:

[(1, 18699280), (2, 9349640), (4, 4674820), (5, 3739856), (8, 2337410), (10, 1869928), (16, 1168705), (20, 934964), (40, 467482), (41, 456080), (80, 233741), (82, 228040), (164, 114020), (205, 91216), (328, 57010), (410, 45608), (656, 28505), (820, 22804), (1640, 11402), (3280, 5701)]