20420582

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 40279680

約数和(自身を除く): 19859098

約数列:

[1, 2, 7, 13, 14, 26, 29, 53, 58, 73, 91, 106, 146, 182, 203, 371, 377, 406, 511, 689, 742, 754, 949, 1022, 1378, 1537, 1898, 2117, 2639, 3074, 3869, 4234, 4823, 5278, 6643, 7738, 9646, 10759, 13286, 14819, 19981, 21518, 27083, 27521, 29638, 39962, 50297, 54166, 55042, 100594, 112201, 139867, 192647, 224402, 279734, 352079, 385294, 704158, 785407, 1458613, 1570814, 2917226, 10210291, 20420582]

約数ペア:

[(1, 20420582), (2, 10210291), (7, 2917226), (13, 1570814), (14, 1458613), (26, 785407), (29, 704158), (53, 385294), (58, 352079), (73, 279734), (91, 224402), (106, 192647), (146, 139867), (182, 112201), (203, 100594), (371, 55042), (377, 54166), (406, 50297), (511, 39962), (689, 29638), (742, 27521), (754, 27083), (949, 21518), (1022, 19981), (1378, 14819), (1537, 13286), (1898, 10759), (2117, 9646), (2639, 7738), (3074, 6643), (3869, 5278), (4234, 4823)]