81477760

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1399}}^1$

素因数の和:1438

約数の個数: 128

約数和(自身を含む): 239904000

約数和(自身を除く): 158426240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 896, 910, 1040, 1120, 1399, 1456, 1664, 1820, 2080, 2240, 2798, 2912, 3640, 4160, 4480, 5596, 5824, 6995, 7280, 8320, 9793, 11192, 11648, 13990, 14560, 18187, 19586, 22384, 27980, 29120, 36374, 39172, 44768, 48965, 55960, 58240, 72748, 78344, 89536, 90935, 97930, 111920, 127309, 145496, 156688, 179072, 181870, 195860, 223840, 254618, 290992, 313376, 363740, 391720, 447680, 509236, 581984, 626752, 636545, 727480, 783440, 895360, 1018472, 1163968, 1253504, 1273090, 1454960, 1566880, 2036944, 2327936, 2546180, 2909920, 3133760, 4073888, 5092360, 5819840, 6267520, 8147776, 10184720, 11639680, 16295552, 20369440, 40738880, 81477760]

約数ペア:

[(1, 81477760), (2, 40738880), (4, 20369440), (5, 16295552), (7, 11639680), (8, 10184720), (10, 8147776), (13, 6267520), (14, 5819840), (16, 5092360), (20, 4073888), (26, 3133760), (28, 2909920), (32, 2546180), (35, 2327936), (40, 2036944), (52, 1566880), (56, 1454960), (64, 1273090), (65, 1253504), (70, 1163968), (80, 1018472), (91, 895360), (104, 783440), (112, 727480), (128, 636545), (130, 626752), (140, 581984), (160, 509236), (182, 447680), (208, 391720), (224, 363740), (260, 313376), (280, 290992), (320, 254618), (364, 223840), (416, 195860), (448, 181870), (455, 179072), (520, 156688), (560, 145496), (640, 127309), (728, 111920), (832, 97930), (896, 90935), (910, 89536), (1040, 78344), (1120, 72748), (1399, 58240), (1456, 55960), (1664, 48965), (1820, 44768), (2080, 39172), (2240, 36374), (2798, 29120), (2912, 27980), (3640, 22384), (4160, 19586), (4480, 18187), (5596, 14560), (5824, 13990), (6995, 11648), (7280, 11192), (8320, 9793)]