428355380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{751}}^1$

素因数の和:877

約数の個数: 72

約数和(自身を含む): 962680320

約数和(自身を除く): 534324940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 361, 380, 395, 722, 751, 790, 1444, 1501, 1502, 1580, 1805, 3002, 3004, 3610, 3755, 6004, 7220, 7505, 7510, 14269, 15010, 15020, 28519, 28538, 30020, 57038, 57076, 59329, 71345, 114076, 118658, 142595, 142690, 237316, 271111, 285190, 285380, 296645, 542222, 570380, 593290, 1084444, 1127251, 1186580, 1355555, 2254502, 2711110, 4509004, 5422220, 5636255, 11272510, 21417769, 22545020, 42835538, 85671076, 107088845, 214177690, 428355380]

約数ペア:

[(1, 428355380), (2, 214177690), (4, 107088845), (5, 85671076), (10, 42835538), (19, 22545020), (20, 21417769), (38, 11272510), (76, 5636255), (79, 5422220), (95, 4509004), (158, 2711110), (190, 2254502), (316, 1355555), (361, 1186580), (380, 1127251), (395, 1084444), (722, 593290), (751, 570380), (790, 542222), (1444, 296645), (1501, 285380), (1502, 285190), (1580, 271111), (1805, 237316), (3002, 142690), (3004, 142595), (3610, 118658), (3755, 114076), (6004, 71345), (7220, 59329), (7505, 57076), (7510, 57038), (14269, 30020), (15010, 28538), (15020, 28519)]