20199709928

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1\times {\mathrm{907}}^1$

素因数の和:1698

約数の個数: 64

約数和(自身を含む): 39243251520

約数和(自身を除く): 19043541592

約数列:

[1, 2, 4, 8, 43, 86, 101, 172, 202, 344, 404, 641, 808, 907, 1282, 1814, 2564, 3628, 4343, 5128, 7256, 8686, 17372, 27563, 34744, 39001, 55126, 64741, 78002, 91607, 110252, 129482, 156004, 183214, 220504, 258964, 312008, 366428, 517928, 581387, 732856, 1162774, 2325548, 2783863, 3939101, 4651096, 5567726, 7878202, 11135452, 15756404, 22270904, 24999641, 31512808, 49999282, 58720087, 99998564, 117440174, 199997128, 234880348, 469760696, 2524963741, 5049927482, 10099854964, 20199709928]

約数ペア:

[(1, 20199709928), (2, 10099854964), (4, 5049927482), (8, 2524963741), (43, 469760696), (86, 234880348), (101, 199997128), (172, 117440174), (202, 99998564), (344, 58720087), (404, 49999282), (641, 31512808), (808, 24999641), (907, 22270904), (1282, 15756404), (1814, 11135452), (2564, 7878202), (3628, 5567726), (4343, 4651096), (5128, 3939101), (7256, 2783863), (8686, 2325548), (17372, 1162774), (27563, 732856), (34744, 581387), (39001, 517928), (55126, 366428), (64741, 312008), (78002, 258964), (91607, 220504), (110252, 183214), (129482, 156004)]