19937984

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:373

約数の個数: 56

約数和(自身を含む): 43696128

約数和(自身を除く): 23758144

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 127, 176, 223, 254, 352, 446, 508, 704, 892, 1016, 1397, 1784, 2032, 2453, 2794, 3568, 4064, 4906, 5588, 7136, 8128, 9812, 11176, 14272, 19624, 22352, 28321, 39248, 44704, 56642, 78496, 89408, 113284, 156992, 226568, 311531, 453136, 623062, 906272, 1246124, 1812544, 2492248, 4984496, 9968992, 19937984]

約数ペア:

[(1, 19937984), (2, 9968992), (4, 4984496), (8, 2492248), (11, 1812544), (16, 1246124), (22, 906272), (32, 623062), (44, 453136), (64, 311531), (88, 226568), (127, 156992), (176, 113284), (223, 89408), (254, 78496), (352, 56642), (446, 44704), (508, 39248), (704, 28321), (892, 22352), (1016, 19624), (1397, 14272), (1784, 11176), (2032, 9812), (2453, 8128), (2794, 7136), (3568, 5588), (4064, 4906)]