21876855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 128

約数和(自身を含む): 49545216

約数和(自身を除く): 27668361

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 31, 33, 35, 39, 47, 55, 65, 77, 91, 93, 105, 141, 143, 155, 165, 195, 217, 231, 235, 273, 329, 341, 385, 403, 429, 455, 465, 517, 611, 651, 705, 715, 987, 1001, 1023, 1085, 1155, 1209, 1365, 1457, 1551, 1645, 1705, 1833, 2015, 2145, 2387, 2585, 2821, 3003, 3055, 3255, 3619, 4277, 4371, 4433, 4935, 5005, 5115, 6045, 6721, 7161, 7285, 7755, 8463, 9165, 10199, 10857, 11935, 12831, 13299, 14105, 15015, 16027, 18095, 18941, 20163, 21385, 21855, 22165, 30597, 31031, 33605, 35805, 42315, 47047, 48081, 50995, 54285, 56823, 64155, 66495, 80135, 93093, 94705, 100815, 112189, 132587, 141141, 152985, 155155, 208351, 235235, 240405, 284115, 336567, 397761, 465465, 560945, 625053, 662935, 705705, 1041755, 1458457, 1682835, 1988805, 3125265, 4375371, 7292285, 21876855]

約数ペア:

[(1, 21876855), (3, 7292285), (5, 4375371), (7, 3125265), (11, 1988805), (13, 1682835), (15, 1458457), (21, 1041755), (31, 705705), (33, 662935), (35, 625053), (39, 560945), (47, 465465), (55, 397761), (65, 336567), (77, 284115), (91, 240405), (93, 235235), (105, 208351), (141, 155155), (143, 152985), (155, 141141), (165, 132587), (195, 112189), (217, 100815), (231, 94705), (235, 93093), (273, 80135), (329, 66495), (341, 64155), (385, 56823), (403, 54285), (429, 50995), (455, 48081), (465, 47047), (517, 42315), (611, 35805), (651, 33605), (705, 31031), (715, 30597), (987, 22165), (1001, 21855), (1023, 21385), (1085, 20163), (1155, 18941), (1209, 18095), (1365, 16027), (1457, 15015), (1551, 14105), (1645, 13299), (1705, 12831), (1833, 11935), (2015, 10857), (2145, 10199), (2387, 9165), (2585, 8463), (2821, 7755), (3003, 7285), (3055, 7161), (3255, 6721), (3619, 6045), (4277, 5115), (4371, 5005), (4433, 4935)]