21506530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1733}}^1$

素因数の和:1830

約数の個数: 32

約数和(自身を含む): 41574384

約数和(自身を除く): 20067854

約数列:

[1, 2, 5, 10, 17, 34, 73, 85, 146, 170, 365, 730, 1241, 1733, 2482, 3466, 6205, 8665, 12410, 17330, 29461, 58922, 126509, 147305, 253018, 294610, 632545, 1265090, 2150653, 4301306, 10753265, 21506530]

約数ペア:

[(1, 21506530), (2, 10753265), (5, 4301306), (10, 2150653), (17, 1265090), (34, 632545), (73, 294610), (85, 253018), (146, 147305), (170, 126509), (365, 58922), (730, 29461), (1241, 17330), (1733, 12410), (2482, 8665), (3466, 6205)]