8420778429

素因数分解:

$3^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{136067}}^1$

素因数の和:136505

約数の個数: 24

約数和(自身を含む): 13091918688

約数和(自身を除く): 4671140259

約数列:

[1, 3, 7, 21, 49, 147, 421, 1263, 2947, 8841, 20629, 61887, 136067, 408201, 952469, 2857407, 6667283, 20001849, 57284207, 171852621, 400989449, 1202968347, 2806926143, 8420778429]

約数ペア:

[(1, 8420778429), (3, 2806926143), (7, 1202968347), (21, 400989449), (49, 171852621), (147, 57284207), (421, 20001849), (1263, 6667283), (2947, 2857407), (8841, 952469), (20629, 408201), (61887, 136067)]