21807440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14347}}^1$

素因数の和:14379

約数の個数: 40

約数和(自身を含む): 53374560

約数和(自身を除く): 31567120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14347, 28694, 57388, 71735, 114776, 143470, 229552, 272593, 286940, 545186, 573880, 1090372, 1147760, 1362965, 2180744, 2725930, 4361488, 5451860, 10903720, 21807440]

約数ペア:

[(1, 21807440), (2, 10903720), (4, 5451860), (5, 4361488), (8, 2725930), (10, 2180744), (16, 1362965), (19, 1147760), (20, 1090372), (38, 573880), (40, 545186), (76, 286940), (80, 272593), (95, 229552), (152, 143470), (190, 114776), (304, 71735), (380, 57388), (760, 28694), (1520, 14347)]