20729072

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{619}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 51663360

約数和(自身を除く): 30934288

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 23, 26, 28, 46, 52, 56, 91, 92, 104, 112, 161, 182, 184, 208, 299, 322, 364, 368, 598, 619, 644, 728, 1196, 1238, 1288, 1456, 2093, 2392, 2476, 2576, 4186, 4333, 4784, 4952, 8047, 8372, 8666, 9904, 14237, 16094, 16744, 17332, 28474, 32188, 33488, 34664, 56329, 56948, 64376, 69328, 99659, 112658, 113896, 128752, 185081, 199318, 225316, 227792, 370162, 398636, 450632, 740324, 797272, 901264, 1295567, 1480648, 1594544, 2591134, 2961296, 5182268, 10364536, 20729072]

約数ペア:

[(1, 20729072), (2, 10364536), (4, 5182268), (7, 2961296), (8, 2591134), (13, 1594544), (14, 1480648), (16, 1295567), (23, 901264), (26, 797272), (28, 740324), (46, 450632), (52, 398636), (56, 370162), (91, 227792), (92, 225316), (104, 199318), (112, 185081), (161, 128752), (182, 113896), (184, 112658), (208, 99659), (299, 69328), (322, 64376), (364, 56948), (368, 56329), (598, 34664), (619, 33488), (644, 32188), (728, 28474), (1196, 17332), (1238, 16744), (1288, 16094), (1456, 14237), (2093, 9904), (2392, 8666), (2476, 8372), (2576, 8047), (4186, 4952), (4333, 4784)]