20802019931

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{21101}}^1$

素因数の和:21216

約数の個数: 48

約数和(自身を含む): 27712834560

約数和(自身を除く): 6910814629

約数列:

[1, 7, 11, 31, 49, 59, 77, 217, 341, 413, 539, 649, 1519, 1829, 2387, 2891, 4543, 12803, 16709, 20119, 21101, 31801, 89621, 140833, 147707, 232111, 654131, 985831, 1033949, 1244959, 1624777, 4578917, 7195441, 8714713, 11373439, 13694549, 32052419, 38593729, 50368087, 61002991, 95861843, 270156103, 352576609, 424531019, 671032901, 1891092721, 2971717133, 20802019931]

約数ペア:

[(1, 20802019931), (7, 2971717133), (11, 1891092721), (31, 671032901), (49, 424531019), (59, 352576609), (77, 270156103), (217, 95861843), (341, 61002991), (413, 50368087), (539, 38593729), (649, 32052419), (1519, 13694549), (1829, 11373439), (2387, 8714713), (2891, 7195441), (4543, 4578917), (12803, 1624777), (16709, 1244959), (20119, 1033949), (21101, 985831), (31801, 654131), (89621, 232111), (140833, 147707)]