391755520

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1811}}^1$

素因数の和:1858

約数の個数: 108

約数和(自身を含む): 1016673336

約数和(自身を除く): 624917816

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 169, 208, 256, 260, 320, 338, 416, 520, 640, 676, 832, 845, 1040, 1280, 1352, 1664, 1690, 1811, 2080, 2704, 3328, 3380, 3622, 4160, 5408, 6760, 7244, 8320, 9055, 10816, 13520, 14488, 16640, 18110, 21632, 23543, 27040, 28976, 36220, 43264, 47086, 54080, 57952, 72440, 94172, 108160, 115904, 117715, 144880, 188344, 216320, 231808, 235430, 289760, 306059, 376688, 463616, 470860, 579520, 612118, 753376, 941720, 1159040, 1224236, 1506752, 1530295, 1883440, 2318080, 2448472, 3013504, 3060590, 3766880, 4896944, 6027008, 6121180, 7533760, 9793888, 12242360, 15067520, 19587776, 24484720, 30135040, 39175552, 48969440, 78351104, 97938880, 195877760, 391755520]

約数ペア:

[(1, 391755520), (2, 195877760), (4, 97938880), (5, 78351104), (8, 48969440), (10, 39175552), (13, 30135040), (16, 24484720), (20, 19587776), (26, 15067520), (32, 12242360), (40, 9793888), (52, 7533760), (64, 6121180), (65, 6027008), (80, 4896944), (104, 3766880), (128, 3060590), (130, 3013504), (160, 2448472), (169, 2318080), (208, 1883440), (256, 1530295), (260, 1506752), (320, 1224236), (338, 1159040), (416, 941720), (520, 753376), (640, 612118), (676, 579520), (832, 470860), (845, 463616), (1040, 376688), (1280, 306059), (1352, 289760), (1664, 235430), (1690, 231808), (1811, 216320), (2080, 188344), (2704, 144880), (3328, 117715), (3380, 115904), (3622, 108160), (4160, 94172), (5408, 72440), (6760, 57952), (7244, 54080), (8320, 47086), (9055, 43264), (10816, 36220), (13520, 28976), (14488, 27040), (16640, 23543), (18110, 21632)]