278904420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81551}}^1$

素因数の和:81585

約数の個数: 72

約数和(自身を含む): 890547840

約数和(自身を除く): 611643420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 81551, 163102, 244653, 326204, 407755, 489306, 733959, 815510, 978612, 1223265, 1467918, 1549469, 1631020, 2446530, 2935836, 3098938, 3669795, 4648407, 4893060, 6197876, 7339590, 7747345, 9296814, 13945221, 14679180, 15494690, 18593628, 23242035, 27890442, 30989380, 46484070, 55780884, 69726105, 92968140, 139452210, 278904420]

約数ペア:

[(1, 278904420), (2, 139452210), (3, 92968140), (4, 69726105), (5, 55780884), (6, 46484070), (9, 30989380), (10, 27890442), (12, 23242035), (15, 18593628), (18, 15494690), (19, 14679180), (20, 13945221), (30, 9296814), (36, 7747345), (38, 7339590), (45, 6197876), (57, 4893060), (60, 4648407), (76, 3669795), (90, 3098938), (95, 2935836), (114, 2446530), (171, 1631020), (180, 1549469), (190, 1467918), (228, 1223265), (285, 978612), (342, 815510), (380, 733959), (570, 489306), (684, 407755), (855, 326204), (1140, 244653), (1710, 163102), (3420, 81551)]