164480720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{108211}}^1$

素因数の和:108243

約数の個数: 40

約数和(自身を含む): 402548640

約数和(自身を除く): 238067920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 108211, 216422, 432844, 541055, 865688, 1082110, 1731376, 2056009, 2164220, 4112018, 4328440, 8224036, 8656880, 10280045, 16448072, 20560090, 32896144, 41120180, 82240360, 164480720]

約数ペア:

[(1, 164480720), (2, 82240360), (4, 41120180), (5, 32896144), (8, 20560090), (10, 16448072), (16, 10280045), (19, 8656880), (20, 8224036), (38, 4328440), (40, 4112018), (76, 2164220), (80, 2056009), (95, 1731376), (152, 1082110), (190, 865688), (304, 541055), (380, 432844), (760, 216422), (1520, 108211)]