19722780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1423}}^1$

素因数の和:1456

約数の個数: 144

約数和(自身を含む): 74640384

約数和(自身を除く): 54917604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1423, 1540, 1980, 2310, 2772, 2846, 3465, 4269, 4620, 5692, 6930, 7115, 8538, 9961, 12807, 13860, 14230, 15653, 17076, 19922, 21345, 25614, 28460, 29883, 31306, 39844, 42690, 46959, 49805, 51228, 59766, 62612, 64035, 78265, 85380, 89649, 93918, 99610, 109571, 119532, 128070, 140877, 149415, 156530, 179298, 187836, 199220, 219142, 234795, 256140, 281754, 298830, 313060, 328713, 358596, 438284, 448245, 469590, 547855, 563508, 597660, 657426, 704385, 896490, 939180, 986139, 1095710, 1314852, 1408770, 1643565, 1792980, 1972278, 2191420, 2817540, 3287130, 3944556, 4930695, 6574260, 9861390, 19722780]

約数ペア:

[(1, 19722780), (2, 9861390), (3, 6574260), (4, 4930695), (5, 3944556), (6, 3287130), (7, 2817540), (9, 2191420), (10, 1972278), (11, 1792980), (12, 1643565), (14, 1408770), (15, 1314852), (18, 1095710), (20, 986139), (21, 939180), (22, 896490), (28, 704385), (30, 657426), (33, 597660), (35, 563508), (36, 547855), (42, 469590), (44, 448245), (45, 438284), (55, 358596), (60, 328713), (63, 313060), (66, 298830), (70, 281754), (77, 256140), (84, 234795), (90, 219142), (99, 199220), (105, 187836), (110, 179298), (126, 156530), (132, 149415), (140, 140877), (154, 128070), (165, 119532), (180, 109571), (198, 99610), (210, 93918), (220, 89649), (231, 85380), (252, 78265), (308, 64035), (315, 62612), (330, 59766), (385, 51228), (396, 49805), (420, 46959), (462, 42690), (495, 39844), (630, 31306), (660, 29883), (693, 28460), (770, 25614), (924, 21345), (990, 19922), (1155, 17076), (1260, 15653), (1386, 14230), (1423, 13860), (1540, 12807), (1980, 9961), (2310, 8538), (2772, 7115), (2846, 6930), (3465, 5692), (4269, 4620)]