212480940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{505907}}^1$

素因数の和:505926

約数の個数: 48

約数和(自身を含む): 679940352

約数和(自身を除く): 467459412

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, 505907, 1011814, 1517721, 2023628, 2529535, 3035442, 3541349, 5059070, 6070884, 7082698, 7588605, 10118140, 10624047, 14165396, 15177210, 17706745, 21248094, 30354420, 35413490, 42496188, 53120235, 70826980, 106240470, 212480940]

約数ペア:

[(1, 212480940), (2, 106240470), (3, 70826980), (4, 53120235), (5, 42496188), (6, 35413490), (7, 30354420), (10, 21248094), (12, 17706745), (14, 15177210), (15, 14165396), (20, 10624047), (21, 10118140), (28, 7588605), (30, 7082698), (35, 6070884), (42, 5059070), (60, 3541349), (70, 3035442), (84, 2529535), (105, 2023628), (140, 1517721), (210, 1011814), (420, 505907)]