21385395

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 38761632

約数和(自身を除く): 17376237

約数列:

[1, 3, 5, 9, 15, 41, 45, 67, 123, 173, 201, 205, 335, 369, 519, 603, 615, 865, 1005, 1557, 1845, 2595, 2747, 3015, 7093, 7785, 8241, 11591, 13735, 21279, 24723, 34773, 35465, 41205, 57955, 63837, 104319, 106395, 123615, 173865, 319185, 475231, 521595, 1425693, 2376155, 4277079, 7128465, 21385395]

約数ペア:

[(1, 21385395), (3, 7128465), (5, 4277079), (9, 2376155), (15, 1425693), (41, 521595), (45, 475231), (67, 319185), (123, 173865), (173, 123615), (201, 106395), (205, 104319), (335, 63837), (369, 57955), (519, 41205), (603, 35465), (615, 34773), (865, 24723), (1005, 21279), (1557, 13735), (1845, 11591), (2595, 8241), (2747, 7785), (3015, 7093)]