21278772

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 58007040

約数和(自身を除く): 36728268

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 31, 36, 46, 62, 69, 92, 93, 124, 138, 186, 207, 276, 279, 372, 414, 558, 713, 828, 829, 1116, 1426, 1658, 2139, 2487, 2852, 3316, 4278, 4974, 6417, 7461, 8556, 9948, 12834, 14922, 19067, 25668, 25699, 29844, 38134, 51398, 57201, 76268, 77097, 102796, 114402, 154194, 171603, 228804, 231291, 308388, 343206, 462582, 591077, 686412, 925164, 1182154, 1773231, 2364308, 3546462, 5319693, 7092924, 10639386, 21278772]

約数ペア:

[(1, 21278772), (2, 10639386), (3, 7092924), (4, 5319693), (6, 3546462), (9, 2364308), (12, 1773231), (18, 1182154), (23, 925164), (31, 686412), (36, 591077), (46, 462582), (62, 343206), (69, 308388), (92, 231291), (93, 228804), (124, 171603), (138, 154194), (186, 114402), (207, 102796), (276, 77097), (279, 76268), (372, 57201), (414, 51398), (558, 38134), (713, 29844), (828, 25699), (829, 25668), (1116, 19067), (1426, 14922), (1658, 12834), (2139, 9948), (2487, 8556), (2852, 7461), (3316, 6417), (4278, 4974)]