21378360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2659}}^1$

素因数の和:2740

約数の個数: 64

約数和(自身を含む): 65116800

約数和(自身を除く): 43738440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 120, 134, 201, 268, 335, 402, 536, 670, 804, 1005, 1340, 1608, 2010, 2659, 2680, 4020, 5318, 7977, 8040, 10636, 13295, 15954, 21272, 26590, 31908, 39885, 53180, 63816, 79770, 106360, 159540, 178153, 319080, 356306, 534459, 712612, 890765, 1068918, 1425224, 1781530, 2137836, 2672295, 3563060, 4275672, 5344590, 7126120, 10689180, 21378360]

約数ペア:

[(1, 21378360), (2, 10689180), (3, 7126120), (4, 5344590), (5, 4275672), (6, 3563060), (8, 2672295), (10, 2137836), (12, 1781530), (15, 1425224), (20, 1068918), (24, 890765), (30, 712612), (40, 534459), (60, 356306), (67, 319080), (120, 178153), (134, 159540), (201, 106360), (268, 79770), (335, 63816), (402, 53180), (536, 39885), (670, 31908), (804, 26590), (1005, 21272), (1340, 15954), (1608, 13295), (2010, 10636), (2659, 8040), (2680, 7977), (4020, 5318)]