20318420

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 44210880

約数和(自身を除く): 23892460

約数列:

[1, 2, 4, 5, 10, 20, 59, 67, 118, 134, 236, 257, 268, 295, 335, 514, 590, 670, 1028, 1180, 1285, 1340, 2570, 3953, 5140, 7906, 15163, 15812, 17219, 19765, 30326, 34438, 39530, 60652, 68876, 75815, 79060, 86095, 151630, 172190, 303260, 344380, 1015921, 2031842, 4063684, 5079605, 10159210, 20318420]

約数ペア:

[(1, 20318420), (2, 10159210), (4, 5079605), (5, 4063684), (10, 2031842), (20, 1015921), (59, 344380), (67, 303260), (118, 172190), (134, 151630), (236, 86095), (257, 79060), (268, 75815), (295, 68876), (335, 60652), (514, 39530), (590, 34438), (670, 30326), (1028, 19765), (1180, 17219), (1285, 15812), (1340, 15163), (2570, 7906), (3953, 5140)]