28297521

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 49720320

約数和(自身を除く): 21422799

約数列:

[1, 3, 7, 9, 21, 23, 59, 63, 69, 161, 177, 207, 331, 413, 483, 531, 993, 1239, 1357, 1449, 2317, 2979, 3717, 4071, 6951, 7613, 9499, 12213, 19529, 20853, 22839, 28497, 53291, 58587, 68517, 85491, 136703, 159873, 175761, 410109, 449167, 479619, 1230327, 1347501, 3144169, 4042503, 9432507, 28297521]

約数ペア:

[(1, 28297521), (3, 9432507), (7, 4042503), (9, 3144169), (21, 1347501), (23, 1230327), (59, 479619), (63, 449167), (69, 410109), (161, 175761), (177, 159873), (207, 136703), (331, 85491), (413, 68517), (483, 58587), (531, 53291), (993, 28497), (1239, 22839), (1357, 20853), (1449, 19529), (2317, 12213), (2979, 9499), (3717, 7613), (4071, 6951)]