20974480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13799}}^1$

素因数の和:13831

約数の個数: 40

約数和(自身を含む): 51336000

約数和(自身を除く): 30361520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13799, 27598, 55196, 68995, 110392, 137990, 220784, 262181, 275980, 524362, 551960, 1048724, 1103920, 1310905, 2097448, 2621810, 4194896, 5243620, 10487240, 20974480]

約数ペア:

[(1, 20974480), (2, 10487240), (4, 5243620), (5, 4194896), (8, 2621810), (10, 2097448), (16, 1310905), (19, 1103920), (20, 1048724), (38, 551960), (40, 524362), (76, 275980), (80, 262181), (95, 220784), (152, 137990), (190, 110392), (304, 68995), (380, 55196), (760, 27598), (1520, 13799)]