400120980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{952669}}^1$

素因数の和:952688

約数の個数: 48

約数和(自身を含む): 1280388480

約数和(自身を除く): 880267500

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, 952669, 1905338, 2858007, 3810676, 4763345, 5716014, 6668683, 9526690, 11432028, 13337366, 14290035, 19053380, 20006049, 26674732, 28580070, 33343415, 40012098, 57160140, 66686830, 80024196, 100030245, 133373660, 200060490, 400120980]

約数ペア:

[(1, 400120980), (2, 200060490), (3, 133373660), (4, 100030245), (5, 80024196), (6, 66686830), (7, 57160140), (10, 40012098), (12, 33343415), (14, 28580070), (15, 26674732), (20, 20006049), (21, 19053380), (28, 14290035), (30, 13337366), (35, 11432028), (42, 9526690), (60, 6668683), (70, 5716014), (84, 4763345), (105, 3810676), (140, 2858007), (210, 1905338), (420, 952669)]