21001515

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{26417}}^1$

素因数の和:26478

約数の個数: 16

約数和(自身を含む): 34237728

約数和(自身を除く): 13236213

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 26417, 79251, 132085, 396255, 1400101, 4200303, 7000505, 21001515]

約数ペア:

[(1, 21001515), (3, 7000505), (5, 4200303), (15, 1400101), (53, 396255), (159, 132085), (265, 79251), (795, 26417)]