28181565

素因数分解:

$3^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{977}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 48974328

約数和(自身を除く): 20792763

約数列:

[1, 3, 5, 9, 15, 45, 641, 977, 1923, 2931, 3205, 4885, 5769, 8793, 9615, 14655, 28845, 43965, 626257, 1878771, 3131285, 5636313, 9393855, 28181565]

約数ペア:

[(1, 28181565), (3, 9393855), (5, 5636313), (9, 3131285), (15, 1878771), (45, 626257), (641, 43965), (977, 28845), (1923, 14655), (2931, 9615), (3205, 8793), (4885, 5769)]