21452445

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:101

約数の個数: 120

約数和(自身を含む): 47672064

約数和(自身を除く): 26219619

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 27, 35, 45, 47, 49, 63, 69, 81, 105, 115, 135, 141, 147, 161, 189, 207, 235, 245, 315, 329, 345, 405, 423, 441, 483, 567, 621, 705, 735, 805, 945, 987, 1035, 1081, 1127, 1269, 1323, 1449, 1645, 1863, 2115, 2205, 2303, 2415, 2835, 2961, 3105, 3243, 3381, 3807, 3969, 4347, 4935, 5405, 5635, 6345, 6615, 6909, 7245, 7567, 8883, 9315, 9729, 10143, 11515, 13041, 14805, 16215, 16905, 19035, 19845, 20727, 21735, 22701, 26649, 29187, 30429, 34545, 37835, 44415, 48645, 50715, 52969, 62181, 65205, 68103, 87561, 91287, 103635, 113505, 133245, 145935, 152145, 158907, 186543, 204309, 264845, 310905, 340515, 437805, 456435, 476721, 612927, 794535, 932715, 1021545, 1430163, 2383605, 3064635, 4290489, 7150815, 21452445]

約数ペア:

[(1, 21452445), (3, 7150815), (5, 4290489), (7, 3064635), (9, 2383605), (15, 1430163), (21, 1021545), (23, 932715), (27, 794535), (35, 612927), (45, 476721), (47, 456435), (49, 437805), (63, 340515), (69, 310905), (81, 264845), (105, 204309), (115, 186543), (135, 158907), (141, 152145), (147, 145935), (161, 133245), (189, 113505), (207, 103635), (235, 91287), (245, 87561), (315, 68103), (329, 65205), (345, 62181), (405, 52969), (423, 50715), (441, 48645), (483, 44415), (567, 37835), (621, 34545), (705, 30429), (735, 29187), (805, 26649), (945, 22701), (987, 21735), (1035, 20727), (1081, 19845), (1127, 19035), (1269, 16905), (1323, 16215), (1449, 14805), (1645, 13041), (1863, 11515), (2115, 10143), (2205, 9729), (2303, 9315), (2415, 8883), (2835, 7567), (2961, 7245), (3105, 6909), (3243, 6615), (3381, 6345), (3807, 5635), (3969, 5405), (4347, 4935)]