84905380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{443}}^1$

素因数の和:533

約数の個数: 72

約数和(自身を含む): 209901888

約数和(自身を除く): 124996508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 443, 518, 740, 886, 1036, 1295, 1369, 1772, 2215, 2590, 2738, 3101, 4430, 5180, 5476, 6202, 6845, 8860, 9583, 12404, 13690, 15505, 16391, 19166, 27380, 31010, 32782, 38332, 47915, 62020, 65564, 81955, 95830, 114737, 163910, 191660, 229474, 327820, 458948, 573685, 606467, 1147370, 1212934, 2294740, 2425868, 3032335, 4245269, 6064670, 8490538, 12129340, 16981076, 21226345, 42452690, 84905380]

約数ペア:

[(1, 84905380), (2, 42452690), (4, 21226345), (5, 16981076), (7, 12129340), (10, 8490538), (14, 6064670), (20, 4245269), (28, 3032335), (35, 2425868), (37, 2294740), (70, 1212934), (74, 1147370), (140, 606467), (148, 573685), (185, 458948), (259, 327820), (370, 229474), (443, 191660), (518, 163910), (740, 114737), (886, 95830), (1036, 81955), (1295, 65564), (1369, 62020), (1772, 47915), (2215, 38332), (2590, 32782), (2738, 31010), (3101, 27380), (4430, 19166), (5180, 16391), (5476, 15505), (6202, 13690), (6845, 12404), (8860, 9583)]