20211597

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 35143680

約数和(自身を除く): 14932083

約数列:

[1, 3, 7, 9, 21, 31, 63, 79, 93, 131, 217, 237, 279, 393, 553, 651, 711, 917, 1179, 1659, 1953, 2449, 2751, 4061, 4977, 7347, 8253, 10349, 12183, 17143, 22041, 28427, 31047, 36549, 51429, 72443, 85281, 93141, 154287, 217329, 255843, 320819, 651987, 962457, 2245733, 2887371, 6737199, 20211597]

約数ペア:

[(1, 20211597), (3, 6737199), (7, 2887371), (9, 2245733), (21, 962457), (31, 651987), (63, 320819), (79, 255843), (93, 217329), (131, 154287), (217, 93141), (237, 85281), (279, 72443), (393, 51429), (553, 36549), (651, 31047), (711, 28427), (917, 22041), (1179, 17143), (1659, 12183), (1953, 10349), (2449, 8253), (2751, 7347), (4061, 4977)]