20824020

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{787}}^1$

素因数の和:819

約数の個数: 144

約数和(自身を含む): 75458880

約数和(自身を除く): 54634860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 787, 882, 945, 980, 1260, 1323, 1470, 1574, 1764, 1890, 2205, 2361, 2646, 2940, 3148, 3780, 3935, 4410, 4722, 5292, 5509, 6615, 7083, 7870, 8820, 9444, 11018, 11805, 13230, 14166, 15740, 16527, 21249, 22036, 23610, 26460, 27545, 28332, 33054, 35415, 38563, 42498, 47220, 49581, 55090, 66108, 70830, 77126, 82635, 84996, 99162, 106245, 110180, 115689, 141660, 148743, 154252, 165270, 192815, 198324, 212490, 231378, 247905, 297486, 330540, 347067, 385630, 424980, 462756, 495810, 578445, 594972, 694134, 743715, 771260, 991620, 1041201, 1156890, 1388268, 1487430, 1735335, 2082402, 2313780, 2974860, 3470670, 4164804, 5206005, 6941340, 10412010, 20824020]

約数ペア:

[(1, 20824020), (2, 10412010), (3, 6941340), (4, 5206005), (5, 4164804), (6, 3470670), (7, 2974860), (9, 2313780), (10, 2082402), (12, 1735335), (14, 1487430), (15, 1388268), (18, 1156890), (20, 1041201), (21, 991620), (27, 771260), (28, 743715), (30, 694134), (35, 594972), (36, 578445), (42, 495810), (45, 462756), (49, 424980), (54, 385630), (60, 347067), (63, 330540), (70, 297486), (84, 247905), (90, 231378), (98, 212490), (105, 198324), (108, 192815), (126, 165270), (135, 154252), (140, 148743), (147, 141660), (180, 115689), (189, 110180), (196, 106245), (210, 99162), (245, 84996), (252, 82635), (270, 77126), (294, 70830), (315, 66108), (378, 55090), (420, 49581), (441, 47220), (490, 42498), (540, 38563), (588, 35415), (630, 33054), (735, 28332), (756, 27545), (787, 26460), (882, 23610), (945, 22036), (980, 21249), (1260, 16527), (1323, 15740), (1470, 14166), (1574, 13230), (1764, 11805), (1890, 11018), (2205, 9444), (2361, 8820), (2646, 7870), (2940, 7083), (3148, 6615), (3780, 5509), (3935, 5292), (4410, 4722)]