81221504

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:420

約数の個数: 128

約数和(自身を含む): 210201600

約数和(自身を除く): 128980096

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 52, 56, 64, 76, 91, 104, 112, 128, 133, 152, 182, 208, 224, 247, 266, 304, 364, 367, 416, 448, 494, 532, 608, 728, 734, 832, 896, 988, 1064, 1216, 1456, 1468, 1664, 1729, 1976, 2128, 2432, 2569, 2912, 2936, 3458, 3952, 4256, 4771, 5138, 5824, 5872, 6916, 6973, 7904, 8512, 9542, 10276, 11648, 11744, 13832, 13946, 15808, 17024, 19084, 20552, 23488, 27664, 27892, 31616, 33397, 38168, 41104, 46976, 48811, 55328, 55784, 66794, 76336, 82208, 90649, 97622, 110656, 111568, 133588, 152672, 164416, 181298, 195244, 221312, 223136, 267176, 305344, 328832, 362596, 390488, 446272, 534352, 610688, 634543, 725192, 780976, 892544, 1068704, 1269086, 1450384, 1561952, 2137408, 2538172, 2900768, 3123904, 4274816, 5076344, 5801536, 6247808, 10152688, 11603072, 20305376, 40610752, 81221504]

約数ペア:

[(1, 81221504), (2, 40610752), (4, 20305376), (7, 11603072), (8, 10152688), (13, 6247808), (14, 5801536), (16, 5076344), (19, 4274816), (26, 3123904), (28, 2900768), (32, 2538172), (38, 2137408), (52, 1561952), (56, 1450384), (64, 1269086), (76, 1068704), (91, 892544), (104, 780976), (112, 725192), (128, 634543), (133, 610688), (152, 534352), (182, 446272), (208, 390488), (224, 362596), (247, 328832), (266, 305344), (304, 267176), (364, 223136), (367, 221312), (416, 195244), (448, 181298), (494, 164416), (532, 152672), (608, 133588), (728, 111568), (734, 110656), (832, 97622), (896, 90649), (988, 82208), (1064, 76336), (1216, 66794), (1456, 55784), (1468, 55328), (1664, 48811), (1729, 46976), (1976, 41104), (2128, 38168), (2432, 33397), (2569, 31616), (2912, 27892), (2936, 27664), (3458, 23488), (3952, 20552), (4256, 19084), (4771, 17024), (5138, 15808), (5824, 13946), (5872, 13832), (6916, 11744), (6973, 11648), (7904, 10276), (8512, 9542)]