20489742

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1787}}^1$

素因数の和:1822

約数の個数: 72

約数和(自身を含む): 55646136

約数和(自身を除く): 35156394

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 49, 63, 78, 91, 98, 117, 126, 147, 182, 234, 273, 294, 441, 546, 637, 819, 882, 1274, 1638, 1787, 1911, 3574, 3822, 5361, 5733, 10722, 11466, 12509, 16083, 23231, 25018, 32166, 37527, 46462, 69693, 75054, 87563, 112581, 139386, 162617, 175126, 209079, 225162, 262689, 325234, 418158, 487851, 525378, 788067, 975702, 1138319, 1463553, 1576134, 2276638, 2927106, 3414957, 6829914, 10244871, 20489742]

約数ペア:

[(1, 20489742), (2, 10244871), (3, 6829914), (6, 3414957), (7, 2927106), (9, 2276638), (13, 1576134), (14, 1463553), (18, 1138319), (21, 975702), (26, 788067), (39, 525378), (42, 487851), (49, 418158), (63, 325234), (78, 262689), (91, 225162), (98, 209079), (117, 175126), (126, 162617), (147, 139386), (182, 112581), (234, 87563), (273, 75054), (294, 69693), (441, 46462), (546, 37527), (637, 32166), (819, 25018), (882, 23231), (1274, 16083), (1638, 12509), (1787, 11466), (1911, 10722), (3574, 5733), (3822, 5361)]