78971340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{26861}}^1$

素因数の和:26887

約数の個数: 72

約数和(自身を含む): 257230512

約数和(自身を除く): 178259172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 26861, 53722, 80583, 107444, 134305, 161166, 188027, 268610, 322332, 376054, 402915, 537220, 564081, 752108, 805830, 940135, 1128162, 1316189, 1611660, 1880270, 2256324, 2632378, 2820405, 3760540, 3948567, 5264756, 5640810, 6580945, 7897134, 11281620, 13161890, 15794268, 19742835, 26323780, 39485670, 78971340]

約数ペア:

[(1, 78971340), (2, 39485670), (3, 26323780), (4, 19742835), (5, 15794268), (6, 13161890), (7, 11281620), (10, 7897134), (12, 6580945), (14, 5640810), (15, 5264756), (20, 3948567), (21, 3760540), (28, 2820405), (30, 2632378), (35, 2256324), (42, 1880270), (49, 1611660), (60, 1316189), (70, 1128162), (84, 940135), (98, 805830), (105, 752108), (140, 564081), (147, 537220), (196, 402915), (210, 376054), (245, 322332), (294, 268610), (420, 188027), (490, 161166), (588, 134305), (735, 107444), (980, 80583), (1470, 53722), (2940, 26861)]