20371185

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{859}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 38638080

約数和(自身を除く): 18266895

約数列:

[1, 3, 5, 9, 15, 17, 31, 45, 51, 85, 93, 153, 155, 255, 279, 465, 527, 765, 859, 1395, 1581, 2577, 2635, 4295, 4743, 7731, 7905, 12885, 14603, 23715, 26629, 38655, 43809, 73015, 79887, 131427, 133145, 219045, 239661, 399435, 452693, 657135, 1198305, 1358079, 2263465, 4074237, 6790395, 20371185]

約数ペア:

[(1, 20371185), (3, 6790395), (5, 4074237), (9, 2263465), (15, 1358079), (17, 1198305), (31, 657135), (45, 452693), (51, 399435), (85, 239661), (93, 219045), (153, 133145), (155, 131427), (255, 79887), (279, 73015), (465, 43809), (527, 38655), (765, 26629), (859, 23715), (1395, 14603), (1581, 12885), (2577, 7905), (2635, 7731), (4295, 4743)]