21072662013

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{1321}}^1\times {\mathrm{409027}}^1$

素因数の和:410364

約数の個数: 16

約数和(自身を含む): 30281160896

約数和(自身を除く): 9208498883

約数列:

[1, 3, 13, 39, 1321, 3963, 17173, 51519, 409027, 1227081, 5317351, 15952053, 540324667, 1620974001, 7024220671, 21072662013]

約数ペア:

[(1, 21072662013), (3, 7024220671), (13, 1620974001), (39, 540324667), (1321, 15952053), (3963, 5317351), (17173, 1227081), (51519, 409027)]