31287123

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 24064173

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 131, 153, 223, 357, 393, 669, 917, 1071, 1179, 1561, 2007, 2227, 2751, 3791, 4683, 6681, 8253, 11373, 14049, 15589, 20043, 26537, 29213, 34119, 46767, 79611, 87639, 140301, 204491, 238833, 262917, 496621, 613473, 1489863, 1840419, 3476347, 4469589, 10429041, 31287123]

約数ペア:

[(1, 31287123), (3, 10429041), (7, 4469589), (9, 3476347), (17, 1840419), (21, 1489863), (51, 613473), (63, 496621), (119, 262917), (131, 238833), (153, 204491), (223, 140301), (357, 87639), (393, 79611), (669, 46767), (917, 34119), (1071, 29213), (1179, 26537), (1561, 20043), (2007, 15589), (2227, 14049), (2751, 11373), (3791, 8253), (4683, 6681)]