81871779

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7681}}^1$

素因数の和:7731

約数の個数: 32

約数和(自身を含む): 132744960

約数和(自身を除く): 50873181

約数列:

[1, 3, 11, 17, 19, 33, 51, 57, 187, 209, 323, 561, 627, 969, 3553, 7681, 10659, 23043, 84491, 130577, 145939, 253473, 391731, 437817, 1436347, 1605329, 2480963, 4309041, 4815987, 7442889, 27290593, 81871779]

約数ペア:

[(1, 81871779), (3, 27290593), (11, 7442889), (17, 4815987), (19, 4309041), (33, 2480963), (51, 1605329), (57, 1436347), (187, 437817), (209, 391731), (323, 253473), (561, 145939), (627, 130577), (969, 84491), (3553, 23043), (7681, 10659)]