19872454

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:528

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 15508346

約数列:

[1, 2, 7, 14, 41, 82, 89, 178, 287, 389, 574, 623, 778, 1246, 2723, 3649, 5446, 7298, 15949, 25543, 31898, 34621, 51086, 69242, 111643, 223286, 242347, 484694, 1419461, 2838922, 9936227, 19872454]

約数ペア:

[(1, 19872454), (2, 9936227), (7, 2838922), (14, 1419461), (41, 484694), (82, 242347), (89, 223286), (178, 111643), (287, 69242), (389, 51086), (574, 34621), (623, 31898), (778, 25543), (1246, 15949), (2723, 7298), (3649, 5446)]