31526721

素因数分解:

$3^2\times {\mathrm{17}}^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 52116480

約数和(自身を除く): 20589759

約数列:

[1, 3, 9, 17, 23, 31, 51, 69, 93, 153, 207, 279, 289, 391, 527, 713, 867, 1173, 1581, 2139, 2601, 3519, 4743, 4913, 6417, 6647, 8959, 12121, 14739, 19941, 26877, 36363, 44217, 59823, 80631, 109089, 112999, 152303, 206057, 338997, 456909, 618171, 1016991, 1370727, 1854513, 3502969, 10508907, 31526721]

約数ペア:

[(1, 31526721), (3, 10508907), (9, 3502969), (17, 1854513), (23, 1370727), (31, 1016991), (51, 618171), (69, 456909), (93, 338997), (153, 206057), (207, 152303), (279, 112999), (289, 109089), (391, 80631), (527, 59823), (713, 44217), (867, 36363), (1173, 26877), (1581, 19941), (2139, 14739), (2601, 12121), (3519, 8959), (4743, 6647), (4913, 6417)]