28723821

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 45550848

約数和(自身を除く): 16827027

約数列:

[1, 3, 7, 21, 41, 73, 123, 219, 287, 457, 511, 861, 1371, 1533, 2993, 3199, 8979, 9597, 18737, 20951, 33361, 56211, 62853, 100083, 131159, 233527, 393477, 700581, 1367801, 4103403, 9574607, 28723821]

約数ペア:

[(1, 28723821), (3, 9574607), (7, 4103403), (21, 1367801), (41, 700581), (73, 393477), (123, 233527), (219, 131159), (287, 100083), (457, 62853), (511, 56211), (861, 33361), (1371, 20951), (1533, 18737), (2993, 9597), (3199, 8979)]