27680720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18211}}^1$

素因数の和:18243

約数の個数: 40

約数和(自身を含む): 67748640

約数和(自身を除く): 40067920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18211, 36422, 72844, 91055, 145688, 182110, 291376, 346009, 364220, 692018, 728440, 1384036, 1456880, 1730045, 2768072, 3460090, 5536144, 6920180, 13840360, 27680720]

約数ペア:

[(1, 27680720), (2, 13840360), (4, 6920180), (5, 5536144), (8, 3460090), (10, 2768072), (16, 1730045), (19, 1456880), (20, 1384036), (38, 728440), (40, 692018), (76, 364220), (80, 346009), (95, 291376), (152, 182110), (190, 145688), (304, 91055), (380, 72844), (760, 36422), (1520, 18211)]