19517745

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1113

約数の個数: 32

約数和(自身を含む): 33997824

約数和(自身を除く): 14480079

約数列:

[1, 3, 5, 13, 15, 39, 65, 101, 195, 303, 505, 991, 1313, 1515, 2973, 3939, 4955, 6565, 12883, 14865, 19695, 38649, 64415, 100091, 193245, 300273, 500455, 1301183, 1501365, 3903549, 6505915, 19517745]

約数ペア:

[(1, 19517745), (3, 6505915), (5, 3903549), (13, 1501365), (15, 1301183), (39, 500455), (65, 300273), (101, 193245), (195, 100091), (303, 64415), (505, 38649), (991, 19695), (1313, 14865), (1515, 12883), (2973, 6565), (3939, 4955)]