21105552

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{227}}^1$

素因数の和:400

約数の個数: 80

約数和(自身を含む): 59371200

約数和(自身を除く): 38265648

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 149, 156, 208, 227, 298, 312, 447, 454, 596, 624, 681, 894, 908, 1192, 1362, 1788, 1816, 1937, 2384, 2724, 2951, 3576, 3632, 3874, 5448, 5811, 5902, 7152, 7748, 8853, 10896, 11622, 11804, 15496, 17706, 23244, 23608, 30992, 33823, 35412, 46488, 47216, 67646, 70824, 92976, 101469, 135292, 141648, 202938, 270584, 405876, 439699, 541168, 811752, 879398, 1319097, 1623504, 1758796, 2638194, 3517592, 5276388, 7035184, 10552776, 21105552]

約数ペア:

[(1, 21105552), (2, 10552776), (3, 7035184), (4, 5276388), (6, 3517592), (8, 2638194), (12, 1758796), (13, 1623504), (16, 1319097), (24, 879398), (26, 811752), (39, 541168), (48, 439699), (52, 405876), (78, 270584), (104, 202938), (149, 141648), (156, 135292), (208, 101469), (227, 92976), (298, 70824), (312, 67646), (447, 47216), (454, 46488), (596, 35412), (624, 33823), (681, 30992), (894, 23608), (908, 23244), (1192, 17706), (1362, 15496), (1788, 11804), (1816, 11622), (1937, 10896), (2384, 8853), (2724, 7748), (2951, 7152), (3576, 5902), (3632, 5811), (3874, 5448)]