20445520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13451}}^1$

素因数の和:13483

約数の個数: 40

約数和(自身を含む): 50041440

約数和(自身を除く): 29595920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13451, 26902, 53804, 67255, 107608, 134510, 215216, 255569, 269020, 511138, 538040, 1022276, 1076080, 1277845, 2044552, 2555690, 4089104, 5111380, 10222760, 20445520]

約数ペア:

[(1, 20445520), (2, 10222760), (4, 5111380), (5, 4089104), (8, 2555690), (10, 2044552), (16, 1277845), (19, 1076080), (20, 1022276), (38, 538040), (40, 511138), (76, 269020), (80, 255569), (95, 215216), (152, 134510), (190, 107608), (304, 67255), (380, 53804), (760, 26902), (1520, 13451)]