28320236

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 61286400

約数和(自身を除く): 32966164

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 59, 62, 79, 98, 118, 124, 158, 196, 217, 236, 316, 413, 434, 553, 826, 868, 1106, 1519, 1652, 1829, 2212, 2449, 2891, 3038, 3658, 3871, 4661, 4898, 5782, 6076, 7316, 7742, 9322, 9796, 11564, 12803, 15484, 17143, 18644, 25606, 32627, 34286, 51212, 65254, 68572, 89621, 120001, 130508, 144491, 179242, 228389, 240002, 288982, 358484, 456778, 480004, 577964, 913556, 1011437, 2022874, 4045748, 7080059, 14160118, 28320236]

約数ペア:

[(1, 28320236), (2, 14160118), (4, 7080059), (7, 4045748), (14, 2022874), (28, 1011437), (31, 913556), (49, 577964), (59, 480004), (62, 456778), (79, 358484), (98, 288982), (118, 240002), (124, 228389), (158, 179242), (196, 144491), (217, 130508), (236, 120001), (316, 89621), (413, 68572), (434, 65254), (553, 51212), (826, 34286), (868, 32627), (1106, 25606), (1519, 18644), (1652, 17143), (1829, 15484), (2212, 12803), (2449, 11564), (2891, 9796), (3038, 9322), (3658, 7742), (3871, 7316), (4661, 6076), (4898, 5782)]