20538903

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 35239680

約数和(自身を除く): 14700777

約数列:

[1, 3, 7, 11, 21, 33, 59, 77, 121, 137, 177, 231, 363, 411, 413, 649, 847, 959, 1239, 1507, 1947, 2541, 2877, 4521, 4543, 7139, 8083, 10549, 13629, 16577, 21417, 24249, 31647, 49731, 49973, 56581, 88913, 116039, 149919, 169743, 266739, 348117, 622391, 978043, 1867173, 2934129, 6846301, 20538903]

約数ペア:

[(1, 20538903), (3, 6846301), (7, 2934129), (11, 1867173), (21, 978043), (33, 622391), (59, 348117), (77, 266739), (121, 169743), (137, 149919), (177, 116039), (231, 88913), (363, 56581), (411, 49973), (413, 49731), (649, 31647), (847, 24249), (959, 21417), (1239, 16577), (1507, 13629), (1947, 10549), (2541, 8083), (2877, 7139), (4521, 4543)]