20723168

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 42774480

約数和(自身を除く): 22051312

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 116, 137, 163, 232, 274, 326, 464, 548, 652, 928, 1096, 1304, 2192, 2608, 3973, 4384, 4727, 5216, 7946, 9454, 15892, 18908, 22331, 31784, 37816, 44662, 63568, 75632, 89324, 127136, 151264, 178648, 357296, 647599, 714592, 1295198, 2590396, 5180792, 10361584, 20723168]

約数ペア:

[(1, 20723168), (2, 10361584), (4, 5180792), (8, 2590396), (16, 1295198), (29, 714592), (32, 647599), (58, 357296), (116, 178648), (137, 151264), (163, 127136), (232, 89324), (274, 75632), (326, 63568), (464, 44662), (548, 37816), (652, 31784), (928, 22331), (1096, 18908), (1304, 15892), (2192, 9454), (2608, 7946), (3973, 5216), (4384, 4727)]