28720276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 58487184

約数和(自身を除く): 29766908

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 53, 68, 106, 212, 221, 442, 613, 689, 884, 901, 1226, 1378, 1802, 2452, 2756, 3604, 7969, 10421, 11713, 15938, 20842, 23426, 31876, 32489, 41684, 46852, 64978, 129956, 135473, 270946, 422357, 541892, 552313, 844714, 1104626, 1689428, 2209252, 7180069, 14360138, 28720276]

約数ペア:

[(1, 28720276), (2, 14360138), (4, 7180069), (13, 2209252), (17, 1689428), (26, 1104626), (34, 844714), (52, 552313), (53, 541892), (68, 422357), (106, 270946), (212, 135473), (221, 129956), (442, 64978), (613, 46852), (689, 41684), (884, 32489), (901, 31876), (1226, 23426), (1378, 20842), (1802, 15938), (2452, 11713), (2756, 10421), (3604, 7969)]