20855679

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 31281600

約数和(自身を除く): 10425921

約数列:

[1, 3, 13, 37, 39, 97, 111, 149, 291, 447, 481, 1261, 1443, 1937, 3589, 3783, 5513, 5811, 10767, 14453, 16539, 43359, 46657, 71669, 139971, 187889, 215007, 534761, 563667, 1604283, 6951893, 20855679]

約数ペア:

[(1, 20855679), (3, 6951893), (13, 1604283), (37, 563667), (39, 534761), (97, 215007), (111, 187889), (149, 139971), (291, 71669), (447, 46657), (481, 43359), (1261, 16539), (1443, 14453), (1937, 10767), (3589, 5811), (3783, 5513)]