21315112

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 54835200

約数和(自身を除く): 33520088

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 23, 26, 28, 38, 46, 52, 56, 67, 76, 91, 92, 104, 133, 134, 152, 161, 182, 184, 247, 266, 268, 299, 322, 364, 437, 469, 494, 532, 536, 598, 644, 728, 871, 874, 938, 988, 1064, 1196, 1273, 1288, 1541, 1729, 1742, 1748, 1876, 1976, 2093, 2392, 2546, 3059, 3082, 3458, 3484, 3496, 3752, 4186, 5092, 5681, 6097, 6118, 6164, 6916, 6968, 8372, 8911, 10184, 10787, 11362, 12194, 12236, 12328, 13832, 16549, 16744, 17822, 20033, 21574, 22724, 24388, 24472, 29279, 33098, 35644, 39767, 40066, 43148, 45448, 48776, 58558, 66196, 71288, 79534, 80132, 86296, 115843, 117116, 132392, 140231, 159068, 160264, 204953, 231686, 234232, 280462, 318136, 380627, 409906, 463372, 560924, 761254, 819812, 926744, 1121848, 1522508, 1639624, 2664389, 3045016, 5328778, 10657556, 21315112]

約数ペア:

[(1, 21315112), (2, 10657556), (4, 5328778), (7, 3045016), (8, 2664389), (13, 1639624), (14, 1522508), (19, 1121848), (23, 926744), (26, 819812), (28, 761254), (38, 560924), (46, 463372), (52, 409906), (56, 380627), (67, 318136), (76, 280462), (91, 234232), (92, 231686), (104, 204953), (133, 160264), (134, 159068), (152, 140231), (161, 132392), (182, 117116), (184, 115843), (247, 86296), (266, 80132), (268, 79534), (299, 71288), (322, 66196), (364, 58558), (437, 48776), (469, 45448), (494, 43148), (532, 40066), (536, 39767), (598, 35644), (644, 33098), (728, 29279), (871, 24472), (874, 24388), (938, 22724), (988, 21574), (1064, 20033), (1196, 17822), (1273, 16744), (1288, 16549), (1541, 13832), (1729, 12328), (1742, 12236), (1748, 12194), (1876, 11362), (1976, 10787), (2093, 10184), (2392, 8911), (2546, 8372), (3059, 6968), (3082, 6916), (3458, 6164), (3484, 6118), (3496, 6097), (3752, 5681), (4186, 5092)]