201531320

素因数分解:

$2^3\times 5^1\times {\mathrm{743}}^1\times {\mathrm{6781}}^1$

素因数の和:7535

約数の個数: 32

約数和(自身を含む): 454122720

約数和(自身を除く): 252591400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 743, 1486, 2972, 3715, 5944, 6781, 7430, 13562, 14860, 27124, 29720, 33905, 54248, 67810, 135620, 271240, 5038283, 10076566, 20153132, 25191415, 40306264, 50382830, 100765660, 201531320]

約数ペア:

[(1, 201531320), (2, 100765660), (4, 50382830), (5, 40306264), (8, 25191415), (10, 20153132), (20, 10076566), (40, 5038283), (743, 271240), (1486, 135620), (2972, 67810), (3715, 54248), (5944, 33905), (6781, 29720), (7430, 27124), (13562, 14860)]