21444420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{853}}^1$

素因数の和:1284

約数の個数: 48

約数和(自身を含む): 60258240

約数和(自身を除く): 38813820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 419, 838, 853, 1257, 1676, 1706, 2095, 2514, 2559, 3412, 4190, 4265, 5028, 5118, 6285, 8380, 8530, 10236, 12570, 12795, 17060, 25140, 25590, 51180, 357407, 714814, 1072221, 1429628, 1787035, 2144442, 3574070, 4288884, 5361105, 7148140, 10722210, 21444420]

約数ペア:

[(1, 21444420), (2, 10722210), (3, 7148140), (4, 5361105), (5, 4288884), (6, 3574070), (10, 2144442), (12, 1787035), (15, 1429628), (20, 1072221), (30, 714814), (60, 357407), (419, 51180), (838, 25590), (853, 25140), (1257, 17060), (1676, 12795), (1706, 12570), (2095, 10236), (2514, 8530), (2559, 8380), (3412, 6285), (4190, 5118), (4265, 5028)]