20708025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 37539264

約数和(自身を除く): 16831239

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 67, 75, 195, 201, 317, 325, 335, 871, 951, 975, 1005, 1585, 1675, 2613, 4121, 4355, 4755, 5025, 7925, 12363, 13065, 20605, 21239, 21775, 23775, 61815, 63717, 65325, 103025, 106195, 276107, 309075, 318585, 530975, 828321, 1380535, 1592925, 4141605, 6902675, 20708025]

約数ペア:

[(1, 20708025), (3, 6902675), (5, 4141605), (13, 1592925), (15, 1380535), (25, 828321), (39, 530975), (65, 318585), (67, 309075), (75, 276107), (195, 106195), (201, 103025), (317, 65325), (325, 63717), (335, 61815), (871, 23775), (951, 21775), (975, 21239), (1005, 20605), (1585, 13065), (1675, 12363), (2613, 7925), (4121, 5025), (4355, 4755)]