21315168

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 144

約数和(自身を含む): 70630560

約数和(自身を除く): 49315392

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 72, 84, 96, 97, 109, 112, 126, 144, 168, 194, 218, 224, 252, 288, 291, 327, 336, 388, 436, 504, 582, 654, 672, 679, 763, 776, 872, 873, 981, 1008, 1164, 1308, 1358, 1526, 1552, 1744, 1746, 1962, 2016, 2037, 2289, 2328, 2616, 2716, 3052, 3104, 3488, 3492, 3924, 4074, 4578, 4656, 5232, 5432, 6104, 6111, 6867, 6984, 7848, 8148, 9156, 9312, 10464, 10573, 10864, 12208, 12222, 13734, 13968, 15696, 16296, 18312, 21146, 21728, 24416, 24444, 27468, 27936, 31392, 31719, 32592, 36624, 42292, 48888, 54936, 63438, 65184, 73248, 74011, 84584, 95157, 97776, 109872, 126876, 148022, 169168, 190314, 195552, 219744, 222033, 253752, 296044, 338336, 380628, 444066, 507504, 592088, 666099, 761256, 888132, 1015008, 1184176, 1332198, 1522512, 1776264, 2368352, 2664396, 3045024, 3552528, 5328792, 7105056, 10657584, 21315168]

約数ペア:

[(1, 21315168), (2, 10657584), (3, 7105056), (4, 5328792), (6, 3552528), (7, 3045024), (8, 2664396), (9, 2368352), (12, 1776264), (14, 1522512), (16, 1332198), (18, 1184176), (21, 1015008), (24, 888132), (28, 761256), (32, 666099), (36, 592088), (42, 507504), (48, 444066), (56, 380628), (63, 338336), (72, 296044), (84, 253752), (96, 222033), (97, 219744), (109, 195552), (112, 190314), (126, 169168), (144, 148022), (168, 126876), (194, 109872), (218, 97776), (224, 95157), (252, 84584), (288, 74011), (291, 73248), (327, 65184), (336, 63438), (388, 54936), (436, 48888), (504, 42292), (582, 36624), (654, 32592), (672, 31719), (679, 31392), (763, 27936), (776, 27468), (872, 24444), (873, 24416), (981, 21728), (1008, 21146), (1164, 18312), (1308, 16296), (1358, 15696), (1526, 13968), (1552, 13734), (1744, 12222), (1746, 12208), (1962, 10864), (2016, 10573), (2037, 10464), (2289, 9312), (2328, 9156), (2616, 8148), (2716, 7848), (3052, 6984), (3104, 6867), (3488, 6111), (3492, 6104), (3924, 5432), (4074, 5232), (4578, 4656)]