64704015

素因数分解:

$3^4\times 5^1\times {\mathrm{159763}}^1$

素因数の和:159780

約数の個数: 20

約数和(自身を含む): 115988664

約数和(自身を除く): 51284649

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 159763, 479289, 798815, 1437867, 2396445, 4313601, 7189335, 12940803, 21568005, 64704015]

約数ペア:

[(1, 64704015), (3, 21568005), (5, 12940803), (9, 7189335), (15, 4313601), (27, 2396445), (45, 1437867), (81, 798815), (135, 479289), (405, 159763)]