21041878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:157

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 18874922

約数列:

[1, 2, 11, 13, 22, 26, 29, 43, 58, 59, 86, 118, 143, 286, 319, 377, 473, 559, 638, 649, 754, 767, 946, 1118, 1247, 1298, 1534, 1711, 2494, 2537, 3422, 4147, 5074, 6149, 8294, 8437, 12298, 13717, 16211, 16874, 18821, 22243, 27434, 27907, 32422, 32981, 37642, 44486, 55814, 65962, 73573, 147146, 178321, 244673, 356642, 362791, 489346, 725582, 809303, 956449, 1618606, 1912898, 10520939, 21041878]

約数ペア:

[(1, 21041878), (2, 10520939), (11, 1912898), (13, 1618606), (22, 956449), (26, 809303), (29, 725582), (43, 489346), (58, 362791), (59, 356642), (86, 244673), (118, 178321), (143, 147146), (286, 73573), (319, 65962), (377, 55814), (473, 44486), (559, 37642), (638, 32981), (649, 32422), (754, 27907), (767, 27434), (946, 22243), (1118, 18821), (1247, 16874), (1298, 16211), (1534, 13717), (1711, 12298), (2494, 8437), (2537, 8294), (3422, 6149), (4147, 5074)]