19659780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{743}}^1$

素因数の和:775

約数の個数: 144

約数和(自身を含む): 71245440

約数和(自身を除く): 51585660

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, 743, 756, 882, 945, 980, 1260, 1323, 1470, 1486, 1764, 1890, 2205, 2229, 2646, 2940, 2972, 3715, 3780, 4410, 4458, 5201, 5292, 6615, 6687, 7430, 8820, 8916, 10402, 11145, 13230, 13374, 14860, 15603, 20061, 20804, 22290, 26005, 26460, 26748, 31206, 33435, 36407, 40122, 44580, 46809, 52010, 62412, 66870, 72814, 78015, 80244, 93618, 100305, 104020, 109221, 133740, 140427, 145628, 156030, 182035, 187236, 200610, 218442, 234045, 280854, 312060, 327663, 364070, 401220, 436884, 468090, 546105, 561708, 655326, 702135, 728140, 936180, 982989, 1092210, 1310652, 1404270, 1638315, 1965978, 2184420, 2808540, 3276630, 3931956, 4914945, 6553260, 9829890, 19659780]

約数ペア:

[(1, 19659780), (2, 9829890), (3, 6553260), (4, 4914945), (5, 3931956), (6, 3276630), (7, 2808540), (9, 2184420), (10, 1965978), (12, 1638315), (14, 1404270), (15, 1310652), (18, 1092210), (20, 982989), (21, 936180), (27, 728140), (28, 702135), (30, 655326), (35, 561708), (36, 546105), (42, 468090), (45, 436884), (49, 401220), (54, 364070), (60, 327663), (63, 312060), (70, 280854), (84, 234045), (90, 218442), (98, 200610), (105, 187236), (108, 182035), (126, 156030), (135, 145628), (140, 140427), (147, 133740), (180, 109221), (189, 104020), (196, 100305), (210, 93618), (245, 80244), (252, 78015), (270, 72814), (294, 66870), (315, 62412), (378, 52010), (420, 46809), (441, 44580), (490, 40122), (540, 36407), (588, 33435), (630, 31206), (735, 26748), (743, 26460), (756, 26005), (882, 22290), (945, 20804), (980, 20061), (1260, 15603), (1323, 14860), (1470, 13374), (1486, 13230), (1764, 11145), (1890, 10402), (2205, 8916), (2229, 8820), (2646, 7430), (2940, 6687), (2972, 6615), (3715, 5292), (3780, 5201), (4410, 4458)]