253264520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{80147}}^1$

素因数の和:80237

約数の個数: 32

約数和(自身を含む): 577065600

約数和(自身を除く): 323801080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 80147, 160294, 320588, 400735, 641176, 801470, 1602940, 3205880, 6331613, 12663226, 25326452, 31658065, 50652904, 63316130, 126632260, 253264520]

約数ペア:

[(1, 253264520), (2, 126632260), (4, 63316130), (5, 50652904), (8, 31658065), (10, 25326452), (20, 12663226), (40, 6331613), (79, 3205880), (158, 1602940), (316, 801470), (395, 641176), (632, 400735), (790, 320588), (1580, 160294), (3160, 80147)]