20807118

素因数分解:

$2^1\times 3^7\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 48176640

約数和(自身を除く): 27369522

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 67, 71, 81, 134, 142, 162, 201, 213, 243, 402, 426, 486, 603, 639, 729, 1206, 1278, 1458, 1809, 1917, 2187, 3618, 3834, 4374, 4757, 5427, 5751, 9514, 10854, 11502, 14271, 16281, 17253, 28542, 32562, 34506, 42813, 48843, 51759, 85626, 97686, 103518, 128439, 146529, 155277, 256878, 293058, 310554, 385317, 770634, 1155951, 2311902, 3467853, 6935706, 10403559, 20807118]

約数ペア:

[(1, 20807118), (2, 10403559), (3, 6935706), (6, 3467853), (9, 2311902), (18, 1155951), (27, 770634), (54, 385317), (67, 310554), (71, 293058), (81, 256878), (134, 155277), (142, 146529), (162, 128439), (201, 103518), (213, 97686), (243, 85626), (402, 51759), (426, 48843), (486, 42813), (603, 34506), (639, 32562), (729, 28542), (1206, 17253), (1278, 16281), (1458, 14271), (1809, 11502), (1917, 10854), (2187, 9514), (3618, 5751), (3834, 5427), (4374, 4757)]