21512959

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{347}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 24554880

約数和(自身を除く): 3041921

約数列:

[1, 13, 19, 247, 251, 347, 3263, 4511, 4769, 6593, 61997, 85709, 87097, 1132261, 1654843, 21512959]

約数ペア:

[(1, 21512959), (13, 1654843), (19, 1132261), (247, 87097), (251, 85709), (347, 61997), (3263, 6593), (4511, 4769)]