21098445

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 37252608

約数和(自身を除く): 16154163

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 157, 255, 289, 465, 471, 527, 785, 867, 1445, 1581, 2355, 2635, 2669, 4335, 4867, 7905, 8007, 8959, 13345, 14601, 24335, 26877, 40035, 44795, 45373, 73005, 82739, 134385, 136119, 226865, 248217, 413695, 680595, 1241085, 1406563, 4219689, 7032815, 21098445]

約数ペア:

[(1, 21098445), (3, 7032815), (5, 4219689), (15, 1406563), (17, 1241085), (31, 680595), (51, 413695), (85, 248217), (93, 226865), (155, 136119), (157, 134385), (255, 82739), (289, 73005), (465, 45373), (471, 44795), (527, 40035), (785, 26877), (867, 24335), (1445, 14601), (1581, 13345), (2355, 8959), (2635, 8007), (2669, 7905), (4335, 4867)]