278511240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2531}}^1$

素因数の和:2683

約数の個数: 128

約数和(自身を含む): 962565120

約数和(自身を除く): 684053880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 262, 280, 393, 420, 524, 655, 786, 840, 917, 1048, 1310, 1572, 1834, 1965, 2531, 2620, 2751, 3144, 3668, 3930, 4585, 5062, 5240, 5502, 7336, 7593, 7860, 9170, 10124, 11004, 12655, 13755, 15186, 15720, 17717, 18340, 20248, 22008, 25310, 27510, 30372, 35434, 36680, 37965, 50620, 53151, 55020, 60744, 70868, 75930, 88585, 101240, 106302, 110040, 141736, 151860, 177170, 212604, 265755, 303720, 331561, 354340, 425208, 531510, 663122, 708680, 994683, 1063020, 1326244, 1657805, 1989366, 2126040, 2320927, 2652488, 3315610, 3978732, 4641854, 4973415, 6631220, 6962781, 7957464, 9283708, 9946830, 11604635, 13262440, 13925562, 18567416, 19893660, 23209270, 27851124, 34813905, 39787320, 46418540, 55702248, 69627810, 92837080, 139255620, 278511240]

約数ペア:

[(1, 278511240), (2, 139255620), (3, 92837080), (4, 69627810), (5, 55702248), (6, 46418540), (7, 39787320), (8, 34813905), (10, 27851124), (12, 23209270), (14, 19893660), (15, 18567416), (20, 13925562), (21, 13262440), (24, 11604635), (28, 9946830), (30, 9283708), (35, 7957464), (40, 6962781), (42, 6631220), (56, 4973415), (60, 4641854), (70, 3978732), (84, 3315610), (105, 2652488), (120, 2320927), (131, 2126040), (140, 1989366), (168, 1657805), (210, 1326244), (262, 1063020), (280, 994683), (393, 708680), (420, 663122), (524, 531510), (655, 425208), (786, 354340), (840, 331561), (917, 303720), (1048, 265755), (1310, 212604), (1572, 177170), (1834, 151860), (1965, 141736), (2531, 110040), (2620, 106302), (2751, 101240), (3144, 88585), (3668, 75930), (3930, 70868), (4585, 60744), (5062, 55020), (5240, 53151), (5502, 50620), (7336, 37965), (7593, 36680), (7860, 35434), (9170, 30372), (10124, 27510), (11004, 25310), (12655, 22008), (13755, 20248), (15186, 18340), (15720, 17717)]