20764485

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 44542080

約数和(自身を除く): 23777595

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 49, 63, 73, 105, 129, 135, 147, 189, 215, 219, 245, 301, 315, 365, 387, 441, 511, 645, 657, 735, 903, 945, 1095, 1161, 1323, 1505, 1533, 1935, 1971, 2107, 2205, 2555, 2709, 3139, 3285, 3577, 4515, 4599, 5805, 6321, 6615, 7665, 8127, 9417, 9855, 10535, 10731, 13545, 13797, 15695, 17885, 18963, 21973, 22995, 28251, 31605, 32193, 40635, 47085, 53655, 56889, 65919, 68985, 84753, 94815, 96579, 109865, 141255, 153811, 160965, 197757, 284445, 329595, 423765, 461433, 482895, 593271, 769055, 988785, 1384299, 2307165, 2966355, 4152897, 6921495, 20764485]

約数ペア:

[(1, 20764485), (3, 6921495), (5, 4152897), (7, 2966355), (9, 2307165), (15, 1384299), (21, 988785), (27, 769055), (35, 593271), (43, 482895), (45, 461433), (49, 423765), (63, 329595), (73, 284445), (105, 197757), (129, 160965), (135, 153811), (147, 141255), (189, 109865), (215, 96579), (219, 94815), (245, 84753), (301, 68985), (315, 65919), (365, 56889), (387, 53655), (441, 47085), (511, 40635), (645, 32193), (657, 31605), (735, 28251), (903, 22995), (945, 21973), (1095, 18963), (1161, 17885), (1323, 15695), (1505, 13797), (1533, 13545), (1935, 10731), (1971, 10535), (2107, 9855), (2205, 9417), (2555, 8127), (2709, 7665), (3139, 6615), (3285, 6321), (3577, 5805), (4515, 4599)]