21667920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{659}}^1$

素因数の和:812

約数の個数: 80

約数和(自身を含む): 67763520

約数和(自身を除く): 46095600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 659, 685, 822, 1096, 1318, 1370, 1644, 1977, 2055, 2192, 2636, 2740, 3288, 3295, 3954, 4110, 5272, 5480, 6576, 6590, 7908, 8220, 9885, 10544, 10960, 13180, 15816, 16440, 19770, 26360, 31632, 32880, 39540, 52720, 79080, 90283, 158160, 180566, 270849, 361132, 451415, 541698, 722264, 902830, 1083396, 1354245, 1444528, 1805660, 2166792, 2708490, 3611320, 4333584, 5416980, 7222640, 10833960, 21667920]

約数ペア:

[(1, 21667920), (2, 10833960), (3, 7222640), (4, 5416980), (5, 4333584), (6, 3611320), (8, 2708490), (10, 2166792), (12, 1805660), (15, 1444528), (16, 1354245), (20, 1083396), (24, 902830), (30, 722264), (40, 541698), (48, 451415), (60, 361132), (80, 270849), (120, 180566), (137, 158160), (240, 90283), (274, 79080), (411, 52720), (548, 39540), (659, 32880), (685, 31632), (822, 26360), (1096, 19770), (1318, 16440), (1370, 15816), (1644, 13180), (1977, 10960), (2055, 10544), (2192, 9885), (2636, 8220), (2740, 7908), (3288, 6590), (3295, 6576), (3954, 5480), (4110, 5272)]