28160379

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:641

約数の個数: 40

約数和(自身を含む): 46347840

約数和(自身を除く): 18187461

約数列:

[1, 3, 9, 13, 27, 39, 47, 81, 117, 141, 351, 423, 569, 611, 1053, 1269, 1707, 1833, 3807, 5121, 5499, 7397, 15363, 16497, 22191, 26743, 46089, 49491, 66573, 80229, 199719, 240687, 347659, 599157, 722061, 1042977, 2166183, 3128931, 9386793, 28160379]

約数ペア:

[(1, 28160379), (3, 9386793), (9, 3128931), (13, 2166183), (27, 1042977), (39, 722061), (47, 599157), (81, 347659), (117, 240687), (141, 199719), (351, 80229), (423, 66573), (569, 49491), (611, 46089), (1053, 26743), (1269, 22191), (1707, 16497), (1833, 15363), (3807, 7397), (5121, 5499)]