15640815

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 10210065

約数列:

[1, 3, 5, 15, 67, 79, 197, 201, 237, 335, 395, 591, 985, 1005, 1185, 2955, 5293, 13199, 15563, 15879, 26465, 39597, 46689, 65995, 77815, 79395, 197985, 233445, 1042721, 3128163, 5213605, 15640815]

約数ペア:

[(1, 15640815), (3, 5213605), (5, 3128163), (15, 1042721), (67, 233445), (79, 197985), (197, 79395), (201, 77815), (237, 65995), (335, 46689), (395, 39597), (591, 26465), (985, 15879), (1005, 15563), (1185, 13199), (2955, 5293)]