21874035

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 17939085

約数列:

[1, 3, 5, 15, 19, 23, 47, 57, 69, 71, 95, 115, 141, 213, 235, 285, 345, 355, 437, 705, 893, 1065, 1081, 1311, 1349, 1633, 2185, 2679, 3243, 3337, 4047, 4465, 4899, 5405, 6555, 6745, 8165, 10011, 13395, 16215, 16685, 20235, 20539, 24495, 31027, 50055, 61617, 63403, 76751, 93081, 102695, 155135, 190209, 230253, 308085, 317015, 383755, 465405, 951045, 1151265, 1458269, 4374807, 7291345, 21874035]

約数ペア:

[(1, 21874035), (3, 7291345), (5, 4374807), (15, 1458269), (19, 1151265), (23, 951045), (47, 465405), (57, 383755), (69, 317015), (71, 308085), (95, 230253), (115, 190209), (141, 155135), (213, 102695), (235, 93081), (285, 76751), (345, 63403), (355, 61617), (437, 50055), (705, 31027), (893, 24495), (1065, 20539), (1081, 20235), (1311, 16685), (1349, 16215), (1633, 13395), (2185, 10011), (2679, 8165), (3243, 6745), (3337, 6555), (4047, 5405), (4465, 4899)]