20646318

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 128

約数和(自身を含む): 56401920

約数和(自身を除く): 35755602

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 23, 29, 33, 42, 46, 58, 66, 67, 69, 77, 87, 134, 138, 154, 161, 174, 201, 203, 231, 253, 319, 322, 402, 406, 462, 469, 483, 506, 609, 638, 667, 737, 759, 938, 957, 966, 1218, 1334, 1407, 1474, 1518, 1541, 1771, 1914, 1943, 2001, 2211, 2233, 2814, 3082, 3542, 3886, 4002, 4422, 4466, 4623, 4669, 5159, 5313, 5829, 6699, 7337, 9246, 9338, 10318, 10626, 10787, 11658, 13398, 13601, 14007, 14674, 15477, 16951, 21373, 21574, 22011, 27202, 28014, 30954, 32361, 33902, 40803, 42746, 44022, 44689, 50853, 51359, 64119, 64722, 81606, 89378, 101706, 102718, 118657, 128238, 134067, 149611, 154077, 237314, 268134, 299222, 308154, 312823, 355971, 448833, 491579, 625646, 711942, 897666, 938469, 983158, 1474737, 1876938, 2949474, 3441053, 6882106, 10323159, 20646318]

約数ペア:

[(1, 20646318), (2, 10323159), (3, 6882106), (6, 3441053), (7, 2949474), (11, 1876938), (14, 1474737), (21, 983158), (22, 938469), (23, 897666), (29, 711942), (33, 625646), (42, 491579), (46, 448833), (58, 355971), (66, 312823), (67, 308154), (69, 299222), (77, 268134), (87, 237314), (134, 154077), (138, 149611), (154, 134067), (161, 128238), (174, 118657), (201, 102718), (203, 101706), (231, 89378), (253, 81606), (319, 64722), (322, 64119), (402, 51359), (406, 50853), (462, 44689), (469, 44022), (483, 42746), (506, 40803), (609, 33902), (638, 32361), (667, 30954), (737, 28014), (759, 27202), (938, 22011), (957, 21574), (966, 21373), (1218, 16951), (1334, 15477), (1407, 14674), (1474, 14007), (1518, 13601), (1541, 13398), (1771, 11658), (1914, 10787), (1943, 10626), (2001, 10318), (2211, 9338), (2233, 9246), (2814, 7337), (3082, 6699), (3542, 5829), (3886, 5313), (4002, 5159), (4422, 4669), (4466, 4623)]