81591660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12251}}^1$

素因数の和:12303

約数の個数: 72

約数和(自身を含む): 254204496

約数和(自身を除く): 172612836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3330, 6660, 12251, 24502, 36753, 49004, 61255, 73506, 110259, 122510, 147012, 183765, 220518, 245020, 367530, 441036, 453287, 551295, 735060, 906574, 1102590, 1359861, 1813148, 2205180, 2266435, 2719722, 4079583, 4532870, 5439444, 6799305, 8159166, 9065740, 13598610, 16318332, 20397915, 27197220, 40795830, 81591660]

約数ペア:

[(1, 81591660), (2, 40795830), (3, 27197220), (4, 20397915), (5, 16318332), (6, 13598610), (9, 9065740), (10, 8159166), (12, 6799305), (15, 5439444), (18, 4532870), (20, 4079583), (30, 2719722), (36, 2266435), (37, 2205180), (45, 1813148), (60, 1359861), (74, 1102590), (90, 906574), (111, 735060), (148, 551295), (180, 453287), (185, 441036), (222, 367530), (333, 245020), (370, 220518), (444, 183765), (555, 147012), (666, 122510), (740, 110259), (1110, 73506), (1332, 61255), (1665, 49004), (2220, 36753), (3330, 24502), (6660, 12251)]