20028712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 43084800

約数和(自身を除く): 23056088

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 67, 79, 86, 88, 134, 158, 172, 268, 316, 344, 473, 536, 632, 737, 869, 946, 1474, 1738, 1892, 2881, 2948, 3397, 3476, 3784, 5293, 5762, 5896, 6794, 6952, 10586, 11524, 13588, 21172, 23048, 27176, 31691, 37367, 42344, 58223, 63382, 74734, 116446, 126764, 149468, 227599, 232892, 253528, 298936, 455198, 465784, 910396, 1820792, 2503589, 5007178, 10014356, 20028712]

約数ペア:

[(1, 20028712), (2, 10014356), (4, 5007178), (8, 2503589), (11, 1820792), (22, 910396), (43, 465784), (44, 455198), (67, 298936), (79, 253528), (86, 232892), (88, 227599), (134, 149468), (158, 126764), (172, 116446), (268, 74734), (316, 63382), (344, 58223), (473, 42344), (536, 37367), (632, 31691), (737, 27176), (869, 23048), (946, 21172), (1474, 13588), (1738, 11524), (1892, 10586), (2881, 6952), (2948, 6794), (3397, 5896), (3476, 5762), (3784, 5293)]