19754685

素因数分解:

$3^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 16412355

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 229, 243, 355, 405, 639, 687, 1065, 1145, 1215, 1917, 2061, 3195, 3435, 5751, 6183, 9585, 10305, 16259, 17253, 18549, 28755, 30915, 48777, 55647, 81295, 86265, 92745, 146331, 243885, 278235, 438993, 731655, 1316979, 2194965, 3950937, 6584895, 19754685]

約数ペア:

[(1, 19754685), (3, 6584895), (5, 3950937), (9, 2194965), (15, 1316979), (27, 731655), (45, 438993), (71, 278235), (81, 243885), (135, 146331), (213, 92745), (229, 86265), (243, 81295), (355, 55647), (405, 48777), (639, 30915), (687, 28755), (1065, 18549), (1145, 17253), (1215, 16259), (1917, 10305), (2061, 9585), (3195, 6183), (3435, 5751)]