199521420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{475051}}^1$

素因数の和:475070

約数の個数: 48

約数和(自身を含む): 638469888

約数和(自身を除く): 438948468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 475051, 950102, 1425153, 1900204, 2375255, 2850306, 3325357, 4750510, 5700612, 6650714, 7125765, 9501020, 9976071, 13301428, 14251530, 16626785, 19952142, 28503060, 33253570, 39904284, 49880355, 66507140, 99760710, 199521420]

約数ペア:

[(1, 199521420), (2, 99760710), (3, 66507140), (4, 49880355), (5, 39904284), (6, 33253570), (7, 28503060), (10, 19952142), (12, 16626785), (14, 14251530), (15, 13301428), (20, 9976071), (21, 9501020), (28, 7125765), (30, 6650714), (35, 5700612), (42, 4750510), (60, 3325357), (70, 2850306), (84, 2375255), (105, 1900204), (140, 1425153), (210, 950102), (420, 475051)]