81575760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{823}}^1$

素因数の和:905

約数の個数: 160

約数和(自身を含む): 294266880

約数和(自身を除く): 212691120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 59, 60, 70, 80, 84, 105, 112, 118, 120, 140, 168, 177, 210, 236, 240, 280, 295, 336, 354, 413, 420, 472, 560, 590, 708, 823, 826, 840, 885, 944, 1180, 1239, 1416, 1646, 1652, 1680, 1770, 2065, 2360, 2469, 2478, 2832, 3292, 3304, 3540, 4115, 4130, 4720, 4938, 4956, 5761, 6195, 6584, 6608, 7080, 8230, 8260, 9876, 9912, 11522, 12345, 12390, 13168, 14160, 16460, 16520, 17283, 19752, 19824, 23044, 24690, 24780, 28805, 32920, 33040, 34566, 39504, 46088, 48557, 49380, 49560, 57610, 65840, 69132, 86415, 92176, 97114, 98760, 99120, 115220, 138264, 145671, 172830, 194228, 197520, 230440, 242785, 276528, 291342, 339899, 345660, 388456, 460880, 485570, 582684, 679798, 691320, 728355, 776912, 971140, 1019697, 1165368, 1359596, 1382640, 1456710, 1699495, 1942280, 2039394, 2330736, 2719192, 2913420, 3398990, 3884560, 4078788, 5098485, 5438384, 5826840, 6797980, 8157576, 10196970, 11653680, 13595960, 16315152, 20393940, 27191920, 40787880, 81575760]

約数ペア:

[(1, 81575760), (2, 40787880), (3, 27191920), (4, 20393940), (5, 16315152), (6, 13595960), (7, 11653680), (8, 10196970), (10, 8157576), (12, 6797980), (14, 5826840), (15, 5438384), (16, 5098485), (20, 4078788), (21, 3884560), (24, 3398990), (28, 2913420), (30, 2719192), (35, 2330736), (40, 2039394), (42, 1942280), (48, 1699495), (56, 1456710), (59, 1382640), (60, 1359596), (70, 1165368), (80, 1019697), (84, 971140), (105, 776912), (112, 728355), (118, 691320), (120, 679798), (140, 582684), (168, 485570), (177, 460880), (210, 388456), (236, 345660), (240, 339899), (280, 291342), (295, 276528), (336, 242785), (354, 230440), (413, 197520), (420, 194228), (472, 172830), (560, 145671), (590, 138264), (708, 115220), (823, 99120), (826, 98760), (840, 97114), (885, 92176), (944, 86415), (1180, 69132), (1239, 65840), (1416, 57610), (1646, 49560), (1652, 49380), (1680, 48557), (1770, 46088), (2065, 39504), (2360, 34566), (2469, 33040), (2478, 32920), (2832, 28805), (3292, 24780), (3304, 24690), (3540, 23044), (4115, 19824), (4130, 19752), (4720, 17283), (4938, 16520), (4956, 16460), (5761, 14160), (6195, 13168), (6584, 12390), (6608, 12345), (7080, 11522), (8230, 9912), (8260, 9876)]