19553940

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{739}}^1$

素因数の和:771

約数の個数: 144

約数和(自身を含む): 70862400

約数和(自身を除く): 51308460

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, 739, 756, 882, 945, 980, 1260, 1323, 1470, 1478, 1764, 1890, 2205, 2217, 2646, 2940, 2956, 3695, 3780, 4410, 4434, 5173, 5292, 6615, 6651, 7390, 8820, 8868, 10346, 11085, 13230, 13302, 14780, 15519, 19953, 20692, 22170, 25865, 26460, 26604, 31038, 33255, 36211, 39906, 44340, 46557, 51730, 62076, 66510, 72422, 77595, 79812, 93114, 99765, 103460, 108633, 133020, 139671, 144844, 155190, 181055, 186228, 199530, 217266, 232785, 279342, 310380, 325899, 362110, 399060, 434532, 465570, 543165, 558684, 651798, 698355, 724220, 931140, 977697, 1086330, 1303596, 1396710, 1629495, 1955394, 2172660, 2793420, 3258990, 3910788, 4888485, 6517980, 9776970, 19553940]

約数ペア:

[(1, 19553940), (2, 9776970), (3, 6517980), (4, 4888485), (5, 3910788), (6, 3258990), (7, 2793420), (9, 2172660), (10, 1955394), (12, 1629495), (14, 1396710), (15, 1303596), (18, 1086330), (20, 977697), (21, 931140), (27, 724220), (28, 698355), (30, 651798), (35, 558684), (36, 543165), (42, 465570), (45, 434532), (49, 399060), (54, 362110), (60, 325899), (63, 310380), (70, 279342), (84, 232785), (90, 217266), (98, 199530), (105, 186228), (108, 181055), (126, 155190), (135, 144844), (140, 139671), (147, 133020), (180, 108633), (189, 103460), (196, 99765), (210, 93114), (245, 79812), (252, 77595), (270, 72422), (294, 66510), (315, 62076), (378, 51730), (420, 46557), (441, 44340), (490, 39906), (540, 36211), (588, 33255), (630, 31038), (735, 26604), (739, 26460), (756, 25865), (882, 22170), (945, 20692), (980, 19953), (1260, 15519), (1323, 14780), (1470, 13302), (1478, 13230), (1764, 11085), (1890, 10346), (2205, 8868), (2217, 8820), (2646, 7390), (2940, 6651), (2956, 6615), (3695, 5292), (3780, 5173), (4410, 4434)]