18690178

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 31434480

約数和(自身を除く): 12744302

約数列:

[1, 2, 13, 26, 41, 82, 89, 178, 197, 394, 533, 1066, 1157, 2314, 2561, 3649, 5122, 7298, 8077, 16154, 17533, 35066, 47437, 94874, 105001, 210002, 227929, 455858, 718853, 1437706, 9345089, 18690178]

約数ペア:

[(1, 18690178), (2, 9345089), (13, 1437706), (26, 718853), (41, 455858), (82, 227929), (89, 210002), (178, 105001), (197, 94874), (394, 47437), (533, 35066), (1066, 17533), (1157, 16154), (2314, 8077), (2561, 7298), (3649, 5122)]