21513030

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 128

約数和(自身を含む): 65802240

約数和(自身を除く): 44289210

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 67, 70, 77, 105, 110, 134, 139, 154, 165, 201, 210, 231, 278, 330, 335, 385, 402, 417, 462, 469, 670, 695, 737, 770, 834, 938, 973, 1005, 1155, 1390, 1407, 1474, 1529, 1946, 2010, 2085, 2211, 2310, 2345, 2814, 2919, 3058, 3685, 4170, 4422, 4587, 4690, 4865, 5159, 5838, 7035, 7370, 7645, 9174, 9313, 9730, 10318, 10703, 11055, 14070, 14595, 15290, 15477, 18626, 21406, 22110, 22935, 25795, 27939, 29190, 30954, 32109, 45870, 46565, 51590, 53515, 55878, 64218, 65191, 77385, 93130, 102443, 107030, 130382, 139695, 154770, 160545, 195573, 204886, 279390, 307329, 321090, 325955, 391146, 512215, 614658, 651910, 717101, 977865, 1024430, 1434202, 1536645, 1955730, 2151303, 3073290, 3585505, 4302606, 7171010, 10756515, 21513030]

約数ペア:

[(1, 21513030), (2, 10756515), (3, 7171010), (5, 4302606), (6, 3585505), (7, 3073290), (10, 2151303), (11, 1955730), (14, 1536645), (15, 1434202), (21, 1024430), (22, 977865), (30, 717101), (33, 651910), (35, 614658), (42, 512215), (55, 391146), (66, 325955), (67, 321090), (70, 307329), (77, 279390), (105, 204886), (110, 195573), (134, 160545), (139, 154770), (154, 139695), (165, 130382), (201, 107030), (210, 102443), (231, 93130), (278, 77385), (330, 65191), (335, 64218), (385, 55878), (402, 53515), (417, 51590), (462, 46565), (469, 45870), (670, 32109), (695, 30954), (737, 29190), (770, 27939), (834, 25795), (938, 22935), (973, 22110), (1005, 21406), (1155, 18626), (1390, 15477), (1407, 15290), (1474, 14595), (1529, 14070), (1946, 11055), (2010, 10703), (2085, 10318), (2211, 9730), (2310, 9313), (2345, 9174), (2814, 7645), (2919, 7370), (3058, 7035), (3685, 5838), (4170, 5159), (4422, 4865), (4587, 4690)]