21080184

素因数分解:

$2^3\times 3^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 33351816

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 71, 89, 139, 142, 178, 213, 267, 278, 284, 356, 417, 426, 534, 556, 568, 712, 834, 852, 1068, 1112, 1668, 1704, 2136, 3336, 6319, 9869, 12371, 12638, 18957, 19738, 24742, 25276, 29607, 37113, 37914, 39476, 49484, 50552, 59214, 74226, 75828, 78952, 98968, 118428, 148452, 151656, 236856, 296904, 878341, 1756682, 2635023, 3513364, 5270046, 7026728, 10540092, 21080184]

約数ペア:

[(1, 21080184), (2, 10540092), (3, 7026728), (4, 5270046), (6, 3513364), (8, 2635023), (12, 1756682), (24, 878341), (71, 296904), (89, 236856), (139, 151656), (142, 148452), (178, 118428), (213, 98968), (267, 78952), (278, 75828), (284, 74226), (356, 59214), (417, 50552), (426, 49484), (534, 39476), (556, 37914), (568, 37113), (712, 29607), (834, 25276), (852, 24742), (1068, 19738), (1112, 18957), (1668, 12638), (1704, 12371), (2136, 9869), (3336, 6319)]