28709380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:329

約数の個数: 96

約数和(自身を含む): 74511360

約数和(自身を除く): 45801980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 43, 70, 76, 86, 95, 133, 140, 172, 190, 215, 251, 266, 301, 380, 430, 502, 532, 602, 665, 817, 860, 1004, 1204, 1255, 1330, 1505, 1634, 1757, 2510, 2660, 3010, 3268, 3514, 4085, 4769, 5020, 5719, 6020, 7028, 8170, 8785, 9538, 10793, 11438, 16340, 17570, 19076, 21586, 22876, 23845, 28595, 33383, 35140, 43172, 47690, 53965, 57190, 66766, 75551, 95380, 107930, 114380, 133532, 151102, 166915, 205067, 215860, 302204, 333830, 377755, 410134, 667660, 755510, 820268, 1025335, 1435469, 1511020, 2050670, 2870938, 4101340, 5741876, 7177345, 14354690, 28709380]

約数ペア:

[(1, 28709380), (2, 14354690), (4, 7177345), (5, 5741876), (7, 4101340), (10, 2870938), (14, 2050670), (19, 1511020), (20, 1435469), (28, 1025335), (35, 820268), (38, 755510), (43, 667660), (70, 410134), (76, 377755), (86, 333830), (95, 302204), (133, 215860), (140, 205067), (172, 166915), (190, 151102), (215, 133532), (251, 114380), (266, 107930), (301, 95380), (380, 75551), (430, 66766), (502, 57190), (532, 53965), (602, 47690), (665, 43172), (817, 35140), (860, 33383), (1004, 28595), (1204, 23845), (1255, 22876), (1330, 21586), (1505, 19076), (1634, 17570), (1757, 16340), (2510, 11438), (2660, 10793), (3010, 9538), (3268, 8785), (3514, 8170), (4085, 7028), (4769, 6020), (5020, 5719)]