221444889

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 310670976

約数和(自身を除く): 89226087

約数列:

[1, 3, 37, 97, 111, 131, 157, 291, 393, 471, 3589, 4847, 5809, 10767, 12707, 14541, 15229, 17427, 20567, 38121, 45687, 61701, 470159, 563473, 760979, 1410477, 1690419, 1994999, 2282937, 5984997, 73814963, 221444889]

約数ペア:

[(1, 221444889), (3, 73814963), (37, 5984997), (97, 2282937), (111, 1994999), (131, 1690419), (157, 1410477), (291, 760979), (393, 563473), (471, 470159), (3589, 61701), (4847, 45687), (5809, 38121), (10767, 20567), (12707, 17427), (14541, 15229)]