81615260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{541}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 181201440

約数和(自身を除く): 99586180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 397, 541, 794, 1082, 1588, 1985, 2164, 2705, 3970, 5410, 7543, 7940, 10279, 10820, 15086, 20558, 30172, 37715, 41116, 51395, 75430, 102790, 150860, 205580, 214777, 429554, 859108, 1073885, 2147770, 4080763, 4295540, 8161526, 16323052, 20403815, 40807630, 81615260]

約数ペア:

[(1, 81615260), (2, 40807630), (4, 20403815), (5, 16323052), (10, 8161526), (19, 4295540), (20, 4080763), (38, 2147770), (76, 1073885), (95, 859108), (190, 429554), (380, 214777), (397, 205580), (541, 150860), (794, 102790), (1082, 75430), (1588, 51395), (1985, 41116), (2164, 37715), (2705, 30172), (3970, 20558), (5410, 15086), (7543, 10820), (7940, 10279)]