128275740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2153}}^1$

素因数の和:2499

約数の個数: 72

約数和(自身を含む): 390459888

約数和(自身を除く): 262184148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 331, 662, 993, 1324, 1655, 1986, 2153, 2979, 3310, 3972, 4306, 4965, 5958, 6459, 6620, 8612, 9930, 10765, 11916, 12918, 14895, 19377, 19860, 21530, 25836, 29790, 32295, 38754, 43060, 59580, 64590, 77508, 96885, 129180, 193770, 387540, 712643, 1425286, 2137929, 2850572, 3563215, 4275858, 6413787, 7126430, 8551716, 10689645, 12827574, 14252860, 21379290, 25655148, 32068935, 42758580, 64137870, 128275740]

約数ペア:

[(1, 128275740), (2, 64137870), (3, 42758580), (4, 32068935), (5, 25655148), (6, 21379290), (9, 14252860), (10, 12827574), (12, 10689645), (15, 8551716), (18, 7126430), (20, 6413787), (30, 4275858), (36, 3563215), (45, 2850572), (60, 2137929), (90, 1425286), (180, 712643), (331, 387540), (662, 193770), (993, 129180), (1324, 96885), (1655, 77508), (1986, 64590), (2153, 59580), (2979, 43060), (3310, 38754), (3972, 32295), (4306, 29790), (4965, 25836), (5958, 21530), (6459, 19860), (6620, 19377), (8612, 14895), (9930, 12918), (10765, 11916)]