20572041

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1097}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 33730560

約数和(自身を除く): 13158519

約数列:

[1, 3, 7, 19, 21, 47, 57, 133, 141, 329, 399, 893, 987, 1097, 2679, 3291, 6251, 7679, 18753, 20843, 23037, 51559, 62529, 145901, 154677, 360913, 437703, 979621, 1082739, 2938863, 6857347, 20572041]

約数ペア:

[(1, 20572041), (3, 6857347), (7, 2938863), (19, 1082739), (21, 979621), (47, 437703), (57, 360913), (133, 154677), (141, 145901), (329, 62529), (399, 51559), (893, 23037), (987, 20843), (1097, 18753), (2679, 7679), (3291, 6251)]