81721365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{947}}^1$

素因数の和:1489

約数の個数: 32

約数和(自身を含む): 143064576

約数和(自身を除く): 61343211

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 523, 947, 1569, 2615, 2841, 4735, 5753, 7845, 10417, 14205, 17259, 28765, 31251, 52085, 86295, 156255, 495281, 1485843, 2476405, 5448091, 7429215, 16344273, 27240455, 81721365]

約数ペア:

[(1, 81721365), (3, 27240455), (5, 16344273), (11, 7429215), (15, 5448091), (33, 2476405), (55, 1485843), (165, 495281), (523, 156255), (947, 86295), (1569, 52085), (2615, 31251), (2841, 28765), (4735, 17259), (5753, 14205), (7845, 10417)]