405857900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19993}}^1$

素因数の和:20043

約数の個数: 72

約数和(自身を含む): 1041287520

約数和(自身を除く): 635429620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 1015, 1450, 2030, 2900, 4060, 5075, 10150, 19993, 20300, 39986, 79972, 99965, 139951, 199930, 279902, 399860, 499825, 559804, 579797, 699755, 999650, 1159594, 1399510, 1999300, 2319188, 2799020, 2898985, 3498775, 4058579, 5797970, 6997550, 8117158, 11595940, 13995100, 14494925, 16234316, 20292895, 28989850, 40585790, 57979700, 81171580, 101464475, 202928950, 405857900]

約数ペア:

[(1, 405857900), (2, 202928950), (4, 101464475), (5, 81171580), (7, 57979700), (10, 40585790), (14, 28989850), (20, 20292895), (25, 16234316), (28, 14494925), (29, 13995100), (35, 11595940), (50, 8117158), (58, 6997550), (70, 5797970), (100, 4058579), (116, 3498775), (140, 2898985), (145, 2799020), (175, 2319188), (203, 1999300), (290, 1399510), (350, 1159594), (406, 999650), (580, 699755), (700, 579797), (725, 559804), (812, 499825), (1015, 399860), (1450, 279902), (2030, 199930), (2900, 139951), (4060, 99965), (5075, 79972), (10150, 39986), (19993, 20300)]