21271005

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 45497088

約数和(自身を除く): 24226083

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 41, 45, 61, 63, 81, 105, 123, 135, 183, 189, 205, 243, 287, 305, 315, 369, 405, 427, 549, 567, 615, 861, 915, 945, 1107, 1215, 1281, 1435, 1647, 1701, 1845, 2135, 2501, 2583, 2745, 2835, 3321, 3843, 4305, 4941, 5535, 6405, 7503, 7749, 8235, 8505, 9963, 11529, 12505, 12915, 14823, 16605, 17507, 19215, 22509, 23247, 24705, 34587, 37515, 38745, 49815, 52521, 57645, 67527, 69741, 74115, 87535, 103761, 112545, 116235, 157563, 172935, 202581, 262605, 337635, 348705, 472689, 518805, 607743, 787815, 1012905, 1418067, 2363445, 3038715, 4254201, 7090335, 21271005]

約数ペア:

[(1, 21271005), (3, 7090335), (5, 4254201), (7, 3038715), (9, 2363445), (15, 1418067), (21, 1012905), (27, 787815), (35, 607743), (41, 518805), (45, 472689), (61, 348705), (63, 337635), (81, 262605), (105, 202581), (123, 172935), (135, 157563), (183, 116235), (189, 112545), (205, 103761), (243, 87535), (287, 74115), (305, 69741), (315, 67527), (369, 57645), (405, 52521), (427, 49815), (549, 38745), (567, 37515), (615, 34587), (861, 24705), (915, 23247), (945, 22509), (1107, 19215), (1215, 17507), (1281, 16605), (1435, 14823), (1647, 12915), (1701, 12505), (1845, 11529), (2135, 9963), (2501, 8505), (2583, 8235), (2745, 7749), (2835, 7503), (3321, 6405), (3843, 5535), (4305, 4941)]