19984425

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 34706112

約数和(自身を除く): 14721687

約数列:

[1, 3, 5, 15, 25, 41, 67, 75, 97, 123, 201, 205, 291, 335, 485, 615, 1005, 1025, 1455, 1675, 2425, 2747, 3075, 3977, 5025, 6499, 7275, 8241, 11931, 13735, 19497, 19885, 32495, 41205, 59655, 68675, 97485, 99425, 162475, 206025, 266459, 298275, 487425, 799377, 1332295, 3996885, 6661475, 19984425]

約数ペア:

[(1, 19984425), (3, 6661475), (5, 3996885), (15, 1332295), (25, 799377), (41, 487425), (67, 298275), (75, 266459), (97, 206025), (123, 162475), (201, 99425), (205, 97485), (291, 68675), (335, 59655), (485, 41205), (615, 32495), (1005, 19885), (1025, 19497), (1455, 13735), (1675, 11931), (2425, 8241), (2747, 7275), (3075, 6499), (3977, 5025)]