21781524

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1151}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 54190080

約数和(自身を除く): 32408556

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 83, 114, 166, 228, 249, 332, 498, 996, 1151, 1577, 2302, 3154, 3453, 4604, 4731, 6308, 6906, 9462, 13812, 18924, 21869, 43738, 65607, 87476, 95533, 131214, 191066, 262428, 286599, 382132, 573198, 1146396, 1815127, 3630254, 5445381, 7260508, 10890762, 21781524]

約数ペア:

[(1, 21781524), (2, 10890762), (3, 7260508), (4, 5445381), (6, 3630254), (12, 1815127), (19, 1146396), (38, 573198), (57, 382132), (76, 286599), (83, 262428), (114, 191066), (166, 131214), (228, 95533), (249, 87476), (332, 65607), (498, 43738), (996, 21869), (1151, 18924), (1577, 13812), (2302, 9462), (3154, 6906), (3453, 6308), (4604, 4731)]