201921680

素因数分解:

$2^4\times 5^1\times {\mathrm{1559}}^1\times {\mathrm{1619}}^1$

素因数の和:3191

約数の個数: 40

約数和(自身を含む): 470059200

約数和(自身を除く): 268137520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1559, 1619, 3118, 3238, 6236, 6476, 7795, 8095, 12472, 12952, 15590, 16190, 24944, 25904, 31180, 32380, 62360, 64760, 124720, 129520, 2524021, 5048042, 10096084, 12620105, 20192168, 25240210, 40384336, 50480420, 100960840, 201921680]

約数ペア:

[(1, 201921680), (2, 100960840), (4, 50480420), (5, 40384336), (8, 25240210), (10, 20192168), (16, 12620105), (20, 10096084), (40, 5048042), (80, 2524021), (1559, 129520), (1619, 124720), (3118, 64760), (3238, 62360), (6236, 32380), (6476, 31180), (7795, 25904), (8095, 24944), (12472, 16190), (12952, 15590)]