19949993

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 26002944

約数和(自身を除く): 6052951

約数列:

[1, 7, 17, 23, 37, 119, 161, 197, 259, 391, 629, 851, 1379, 2737, 3349, 4403, 4531, 5957, 7289, 14467, 23443, 31717, 51023, 77027, 101269, 123913, 167647, 539189, 867391, 1173529, 2849999, 19949993]

約数ペア:

[(1, 19949993), (7, 2849999), (17, 1173529), (23, 867391), (37, 539189), (119, 167647), (161, 123913), (197, 101269), (259, 77027), (391, 51023), (629, 31717), (851, 23443), (1379, 14467), (2737, 7289), (3349, 5957), (4403, 4531)]