21715395

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{577}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 37676352

約数和(自身を除く): 15960957

約数列:

[1, 3, 5, 13, 15, 39, 65, 193, 195, 577, 579, 965, 1731, 2509, 2885, 2895, 7501, 7527, 8655, 12545, 22503, 37505, 37635, 111361, 112515, 334083, 556805, 1447693, 1670415, 4343079, 7238465, 21715395]

約数ペア:

[(1, 21715395), (3, 7238465), (5, 4343079), (13, 1670415), (15, 1447693), (39, 556805), (65, 334083), (193, 112515), (195, 111361), (577, 37635), (579, 37505), (965, 22503), (1731, 12545), (2509, 8655), (2885, 7527), (2895, 7501)]