21815388

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:256

約数の個数: 108

約数和(自身を含む): 65356200

約数和(自身を除く): 43540812

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 83, 84, 98, 126, 147, 149, 166, 196, 249, 252, 294, 298, 332, 441, 447, 498, 581, 588, 596, 747, 882, 894, 996, 1043, 1162, 1341, 1494, 1743, 1764, 1788, 2086, 2324, 2682, 2988, 3129, 3486, 4067, 4172, 5229, 5364, 6258, 6972, 7301, 8134, 9387, 10458, 12201, 12367, 12516, 14602, 16268, 18774, 20916, 21903, 24402, 24734, 29204, 36603, 37101, 37548, 43806, 48804, 49468, 65709, 73206, 74202, 86569, 87612, 111303, 131418, 146412, 148404, 173138, 222606, 259707, 262836, 346276, 445212, 519414, 605983, 779121, 1038828, 1211966, 1558242, 1817949, 2423932, 3116484, 3635898, 5453847, 7271796, 10907694, 21815388]

約数ペア:

[(1, 21815388), (2, 10907694), (3, 7271796), (4, 5453847), (6, 3635898), (7, 3116484), (9, 2423932), (12, 1817949), (14, 1558242), (18, 1211966), (21, 1038828), (28, 779121), (36, 605983), (42, 519414), (49, 445212), (63, 346276), (83, 262836), (84, 259707), (98, 222606), (126, 173138), (147, 148404), (149, 146412), (166, 131418), (196, 111303), (249, 87612), (252, 86569), (294, 74202), (298, 73206), (332, 65709), (441, 49468), (447, 48804), (498, 43806), (581, 37548), (588, 37101), (596, 36603), (747, 29204), (882, 24734), (894, 24402), (996, 21903), (1043, 20916), (1162, 18774), (1341, 16268), (1494, 14602), (1743, 12516), (1764, 12367), (1788, 12201), (2086, 10458), (2324, 9387), (2682, 8134), (2988, 7301), (3129, 6972), (3486, 6258), (4067, 5364), (4172, 5229)]