21121884

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 120

約数和(自身を含む): 64507520

約数和(自身を除く): 43385636

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 67, 81, 84, 108, 126, 134, 139, 162, 189, 201, 252, 268, 278, 324, 378, 402, 417, 469, 556, 567, 603, 756, 804, 834, 938, 973, 1134, 1206, 1251, 1407, 1668, 1809, 1876, 1946, 2268, 2412, 2502, 2814, 2919, 3618, 3753, 3892, 4221, 5004, 5427, 5628, 5838, 7236, 7506, 8442, 8757, 9313, 10854, 11259, 11676, 12663, 15012, 16884, 17514, 18626, 21708, 22518, 25326, 26271, 27939, 35028, 37252, 37989, 45036, 50652, 52542, 55878, 65191, 75978, 78813, 83817, 105084, 111756, 130382, 151956, 157626, 167634, 195573, 251451, 260764, 315252, 335268, 391146, 502902, 586719, 754353, 782292, 1005804, 1173438, 1508706, 1760157, 2346876, 3017412, 3520314, 5280471, 7040628, 10560942, 21121884]

約数ペア:

[(1, 21121884), (2, 10560942), (3, 7040628), (4, 5280471), (6, 3520314), (7, 3017412), (9, 2346876), (12, 1760157), (14, 1508706), (18, 1173438), (21, 1005804), (27, 782292), (28, 754353), (36, 586719), (42, 502902), (54, 391146), (63, 335268), (67, 315252), (81, 260764), (84, 251451), (108, 195573), (126, 167634), (134, 157626), (139, 151956), (162, 130382), (189, 111756), (201, 105084), (252, 83817), (268, 78813), (278, 75978), (324, 65191), (378, 55878), (402, 52542), (417, 50652), (469, 45036), (556, 37989), (567, 37252), (603, 35028), (756, 27939), (804, 26271), (834, 25326), (938, 22518), (973, 21708), (1134, 18626), (1206, 17514), (1251, 16884), (1407, 15012), (1668, 12663), (1809, 11676), (1876, 11259), (1946, 10854), (2268, 9313), (2412, 8757), (2502, 8442), (2814, 7506), (2919, 7236), (3618, 5838), (3753, 5628), (3892, 5427), (4221, 5004)]