19818540

素因数分解:

$2^2\times 3^3\times 5^1\times 7^3\times {\mathrm{107}}^1$

素因数の和:146

約数の個数: 192

約数和(自身を含む): 72576000

約数和(自身を除く): 52757460

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, 107, 108, 126, 135, 140, 147, 180, 189, 196, 210, 214, 245, 252, 270, 294, 315, 321, 343, 378, 420, 428, 441, 490, 535, 540, 588, 630, 642, 686, 735, 749, 756, 882, 945, 963, 980, 1029, 1070, 1260, 1284, 1323, 1372, 1470, 1498, 1605, 1715, 1764, 1890, 1926, 2058, 2140, 2205, 2247, 2646, 2889, 2940, 2996, 3087, 3210, 3430, 3745, 3780, 3852, 4116, 4410, 4494, 4815, 5145, 5243, 5292, 5778, 6174, 6420, 6615, 6741, 6860, 7490, 8820, 8988, 9261, 9630, 10290, 10486, 11235, 11556, 12348, 13230, 13482, 14445, 14980, 15435, 15729, 18522, 19260, 20223, 20580, 20972, 22470, 26215, 26460, 26964, 28890, 30870, 31458, 33705, 36701, 37044, 40446, 44940, 46305, 47187, 52430, 57780, 61740, 62916, 67410, 73402, 78645, 80892, 92610, 94374, 101115, 104860, 110103, 134820, 141561, 146804, 157290, 183505, 185220, 188748, 202230, 220206, 235935, 283122, 314580, 330309, 367010, 404460, 440412, 471870, 550515, 566244, 660618, 707805, 734020, 943740, 990927, 1101030, 1321236, 1415610, 1651545, 1981854, 2202060, 2831220, 3303090, 3963708, 4954635, 6606180, 9909270, 19818540]

約数ペア:

[(1, 19818540), (2, 9909270), (3, 6606180), (4, 4954635), (5, 3963708), (6, 3303090), (7, 2831220), (9, 2202060), (10, 1981854), (12, 1651545), (14, 1415610), (15, 1321236), (18, 1101030), (20, 990927), (21, 943740), (27, 734020), (28, 707805), (30, 660618), (35, 566244), (36, 550515), (42, 471870), (45, 440412), (49, 404460), (54, 367010), (60, 330309), (63, 314580), (70, 283122), (84, 235935), (90, 220206), (98, 202230), (105, 188748), (107, 185220), (108, 183505), (126, 157290), (135, 146804), (140, 141561), (147, 134820), (180, 110103), (189, 104860), (196, 101115), (210, 94374), (214, 92610), (245, 80892), (252, 78645), (270, 73402), (294, 67410), (315, 62916), (321, 61740), (343, 57780), (378, 52430), (420, 47187), (428, 46305), (441, 44940), (490, 40446), (535, 37044), (540, 36701), (588, 33705), (630, 31458), (642, 30870), (686, 28890), (735, 26964), (749, 26460), (756, 26215), (882, 22470), (945, 20972), (963, 20580), (980, 20223), (1029, 19260), (1070, 18522), (1260, 15729), (1284, 15435), (1323, 14980), (1372, 14445), (1470, 13482), (1498, 13230), (1605, 12348), (1715, 11556), (1764, 11235), (1890, 10486), (1926, 10290), (2058, 9630), (2140, 9261), (2205, 8988), (2247, 8820), (2646, 7490), (2889, 6860), (2940, 6741), (2996, 6615), (3087, 6420), (3210, 6174), (3430, 5778), (3745, 5292), (3780, 5243), (3852, 5145), (4116, 4815), (4410, 4494)]