21805686

素因数分解:

$2^1\times 3^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 120

約数和(自身を含む): 59093496

約数和(自身を除く): 37287810

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 41, 42, 49, 54, 63, 67, 81, 82, 98, 123, 126, 134, 147, 162, 189, 201, 246, 287, 294, 369, 378, 402, 441, 469, 567, 574, 603, 738, 861, 882, 938, 1107, 1134, 1206, 1323, 1407, 1722, 1809, 2009, 2214, 2583, 2646, 2747, 2814, 3283, 3321, 3618, 3969, 4018, 4221, 5166, 5427, 5494, 6027, 6566, 6642, 7749, 7938, 8241, 8442, 9849, 10854, 12054, 12663, 15498, 16482, 18081, 19229, 19698, 23247, 24723, 25326, 29547, 36162, 37989, 38458, 46494, 49446, 54243, 57687, 59094, 74169, 75978, 88641, 108486, 115374, 134603, 148338, 162729, 173061, 177282, 222507, 265923, 269206, 325458, 346122, 403809, 445014, 519183, 531846, 807618, 1038366, 1211427, 1557549, 2422854, 3115098, 3634281, 7268562, 10902843, 21805686]

約数ペア:

[(1, 21805686), (2, 10902843), (3, 7268562), (6, 3634281), (7, 3115098), (9, 2422854), (14, 1557549), (18, 1211427), (21, 1038366), (27, 807618), (41, 531846), (42, 519183), (49, 445014), (54, 403809), (63, 346122), (67, 325458), (81, 269206), (82, 265923), (98, 222507), (123, 177282), (126, 173061), (134, 162729), (147, 148338), (162, 134603), (189, 115374), (201, 108486), (246, 88641), (287, 75978), (294, 74169), (369, 59094), (378, 57687), (402, 54243), (441, 49446), (469, 46494), (567, 38458), (574, 37989), (603, 36162), (738, 29547), (861, 25326), (882, 24723), (938, 23247), (1107, 19698), (1134, 19229), (1206, 18081), (1323, 16482), (1407, 15498), (1722, 12663), (1809, 12054), (2009, 10854), (2214, 9849), (2583, 8442), (2646, 8241), (2747, 7938), (2814, 7749), (3283, 6642), (3321, 6566), (3618, 6027), (3969, 5494), (4018, 5427), (4221, 5166)]