28881180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{571}}^1$

素因数の和:867

約数の個数: 72

約数和(自身を含む): 88071984

約数和(自身を除く): 59190804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 281, 562, 571, 843, 1124, 1142, 1405, 1686, 1713, 2284, 2529, 2810, 2855, 3372, 3426, 4215, 5058, 5139, 5620, 5710, 6852, 8430, 8565, 10116, 10278, 11420, 12645, 16860, 17130, 20556, 25290, 25695, 34260, 50580, 51390, 102780, 160451, 320902, 481353, 641804, 802255, 962706, 1444059, 1604510, 1925412, 2406765, 2888118, 3209020, 4813530, 5776236, 7220295, 9627060, 14440590, 28881180]

約数ペア:

[(1, 28881180), (2, 14440590), (3, 9627060), (4, 7220295), (5, 5776236), (6, 4813530), (9, 3209020), (10, 2888118), (12, 2406765), (15, 1925412), (18, 1604510), (20, 1444059), (30, 962706), (36, 802255), (45, 641804), (60, 481353), (90, 320902), (180, 160451), (281, 102780), (562, 51390), (571, 50580), (843, 34260), (1124, 25695), (1142, 25290), (1405, 20556), (1686, 17130), (1713, 16860), (2284, 12645), (2529, 11420), (2810, 10278), (2855, 10116), (3372, 8565), (3426, 8430), (4215, 6852), (5058, 5710), (5139, 5620)]