39994340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 87381504

約数和(自身を除く): 47387164

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 251, 257, 310, 502, 514, 620, 1004, 1028, 1255, 1285, 2510, 2570, 5020, 5140, 7781, 7967, 15562, 15934, 31124, 31868, 38905, 39835, 64507, 77810, 79670, 129014, 155620, 159340, 258028, 322535, 645070, 1290140, 1999717, 3999434, 7998868, 9998585, 19997170, 39994340]

約数ペア:

[(1, 39994340), (2, 19997170), (4, 9998585), (5, 7998868), (10, 3999434), (20, 1999717), (31, 1290140), (62, 645070), (124, 322535), (155, 258028), (251, 159340), (257, 155620), (310, 129014), (502, 79670), (514, 77810), (620, 64507), (1004, 39835), (1028, 38905), (1255, 31868), (1285, 31124), (2510, 15934), (2570, 15562), (5020, 7967), (5140, 7781)]