1991640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{2371}}^1$

素因数の和:2392

約数の個数: 64

約数和(自身を含む): 6831360

約数和(自身を除く): 4839720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 2371, 4742, 7113, 9484, 11855, 14226, 16597, 18968, 23710, 28452, 33194, 35565, 47420, 49791, 56904, 66388, 71130, 82985, 94840, 99582, 132776, 142260, 165970, 199164, 248955, 284520, 331940, 398328, 497910, 663880, 995820, 1991640]

約数ペア:

[(1, 1991640), (2, 995820), (3, 663880), (4, 497910), (5, 398328), (6, 331940), (7, 284520), (8, 248955), (10, 199164), (12, 165970), (14, 142260), (15, 132776), (20, 99582), (21, 94840), (24, 82985), (28, 71130), (30, 66388), (35, 56904), (40, 49791), (42, 47420), (56, 35565), (60, 33194), (70, 28452), (84, 23710), (105, 18968), (120, 16597), (140, 14226), (168, 11855), (210, 9484), (280, 7113), (420, 4742), (840, 2371)]