21688940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{701}}^1$

素因数の和:747

約数の個数: 96

約数和(自身を含む): 59439744

約数和(自身を除く): 37750804

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 170, 182, 221, 238, 260, 340, 364, 442, 455, 476, 595, 701, 884, 910, 1105, 1190, 1402, 1547, 1820, 2210, 2380, 2804, 3094, 3505, 4420, 4907, 6188, 7010, 7735, 9113, 9814, 11917, 14020, 15470, 18226, 19628, 23834, 24535, 30940, 36452, 45565, 47668, 49070, 59585, 63791, 83419, 91130, 98140, 119170, 127582, 154921, 166838, 182260, 238340, 255164, 309842, 318955, 333676, 417095, 619684, 637910, 774605, 834190, 1084447, 1275820, 1549210, 1668380, 2168894, 3098420, 4337788, 5422235, 10844470, 21688940]

約数ペア:

[(1, 21688940), (2, 10844470), (4, 5422235), (5, 4337788), (7, 3098420), (10, 2168894), (13, 1668380), (14, 1549210), (17, 1275820), (20, 1084447), (26, 834190), (28, 774605), (34, 637910), (35, 619684), (52, 417095), (65, 333676), (68, 318955), (70, 309842), (85, 255164), (91, 238340), (119, 182260), (130, 166838), (140, 154921), (170, 127582), (182, 119170), (221, 98140), (238, 91130), (260, 83419), (340, 63791), (364, 59585), (442, 49070), (455, 47668), (476, 45565), (595, 36452), (701, 30940), (884, 24535), (910, 23834), (1105, 19628), (1190, 18226), (1402, 15470), (1547, 14020), (1820, 11917), (2210, 9814), (2380, 9113), (2804, 7735), (3094, 7010), (3505, 6188), (4420, 4907)]