1640779959

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{15139}}^1$

素因数の和:15559

約数の個数: 32

約数和(自身を含む): 2699522560

約数和(自身を除く): 1058742601

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 397, 1191, 2779, 5161, 8337, 15139, 15483, 36127, 45417, 105973, 108381, 196807, 317919, 590421, 1377649, 4132947, 6010183, 18030549, 42071281, 78132379, 126213843, 234397137, 546926653, 1640779959]

約数ペア:

[(1, 1640779959), (3, 546926653), (7, 234397137), (13, 126213843), (21, 78132379), (39, 42071281), (91, 18030549), (273, 6010183), (397, 4132947), (1191, 1377649), (2779, 590421), (5161, 317919), (8337, 196807), (15139, 108381), (15483, 105973), (36127, 45417)]