21160053

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14220747

約数列:

[1, 3, 9, 17, 19, 29, 51, 57, 87, 153, 171, 251, 261, 323, 493, 551, 753, 969, 1479, 1653, 2259, 2907, 4267, 4437, 4769, 4959, 7279, 9367, 12801, 14307, 21837, 28101, 38403, 42921, 65511, 81073, 84303, 123743, 138301, 243219, 371229, 414903, 729657, 1113687, 1244709, 2351117, 7053351, 21160053]

約数ペア:

[(1, 21160053), (3, 7053351), (9, 2351117), (17, 1244709), (19, 1113687), (29, 729657), (51, 414903), (57, 371229), (87, 243219), (153, 138301), (171, 123743), (251, 84303), (261, 81073), (323, 65511), (493, 42921), (551, 38403), (753, 28101), (969, 21837), (1479, 14307), (1653, 12801), (2259, 9367), (2907, 7279), (4267, 4959), (4437, 4769)]