21945760

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7219}}^1$

素因数の和:7253

約数の個数: 48

約数和(自身を含む): 54583200

約数和(自身を除く): 32637440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 7219, 14438, 28876, 36095, 57752, 72190, 115504, 137161, 144380, 231008, 274322, 288760, 548644, 577520, 685805, 1097288, 1155040, 1371610, 2194576, 2743220, 4389152, 5486440, 10972880, 21945760]

約数ペア:

[(1, 21945760), (2, 10972880), (4, 5486440), (5, 4389152), (8, 2743220), (10, 2194576), (16, 1371610), (19, 1155040), (20, 1097288), (32, 685805), (38, 577520), (40, 548644), (76, 288760), (80, 274322), (95, 231008), (152, 144380), (160, 137161), (190, 115504), (304, 72190), (380, 57752), (608, 36095), (760, 28876), (1520, 14438), (3040, 7219)]