82814720

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 216336960

約数和(自身を除く): 133522240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 29, 32, 40, 46, 58, 64, 80, 92, 97, 115, 116, 128, 145, 160, 184, 194, 230, 232, 256, 290, 320, 368, 388, 460, 464, 485, 580, 640, 667, 736, 776, 920, 928, 970, 1160, 1280, 1334, 1472, 1552, 1840, 1856, 1940, 2231, 2320, 2668, 2813, 2944, 3104, 3335, 3680, 3712, 3880, 4462, 4640, 5336, 5626, 5888, 6208, 6670, 7360, 7424, 7760, 8924, 9280, 10672, 11155, 11252, 12416, 13340, 14065, 14720, 15520, 17848, 18560, 21344, 22310, 22504, 24832, 26680, 28130, 29440, 31040, 35696, 37120, 42688, 44620, 45008, 53360, 56260, 62080, 64699, 71392, 85376, 89240, 90016, 106720, 112520, 124160, 129398, 142784, 170752, 178480, 180032, 213440, 225040, 258796, 285568, 323495, 356960, 360064, 426880, 450080, 517592, 571136, 646990, 713920, 720128, 853760, 900160, 1035184, 1293980, 1427840, 1800320, 2070368, 2587960, 2855680, 3600640, 4140736, 5175920, 8281472, 10351840, 16562944, 20703680, 41407360, 82814720]

約数ペア:

[(1, 82814720), (2, 41407360), (4, 20703680), (5, 16562944), (8, 10351840), (10, 8281472), (16, 5175920), (20, 4140736), (23, 3600640), (29, 2855680), (32, 2587960), (40, 2070368), (46, 1800320), (58, 1427840), (64, 1293980), (80, 1035184), (92, 900160), (97, 853760), (115, 720128), (116, 713920), (128, 646990), (145, 571136), (160, 517592), (184, 450080), (194, 426880), (230, 360064), (232, 356960), (256, 323495), (290, 285568), (320, 258796), (368, 225040), (388, 213440), (460, 180032), (464, 178480), (485, 170752), (580, 142784), (640, 129398), (667, 124160), (736, 112520), (776, 106720), (920, 90016), (928, 89240), (970, 85376), (1160, 71392), (1280, 64699), (1334, 62080), (1472, 56260), (1552, 53360), (1840, 45008), (1856, 44620), (1940, 42688), (2231, 37120), (2320, 35696), (2668, 31040), (2813, 29440), (2944, 28130), (3104, 26680), (3335, 24832), (3680, 22504), (3712, 22310), (3880, 21344), (4462, 18560), (4640, 17848), (5336, 15520), (5626, 14720), (5888, 14065), (6208, 13340), (6670, 12416), (7360, 11252), (7424, 11155), (7760, 10672), (8924, 9280)]