1721000721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1\times {\mathrm{3719}}^1$

素因数の和:4149

約数の個数: 32

約数和(自身を含む): 2578406400

約数和(自身を除く): 857405679

約数列:

[1, 3, 11, 33, 37, 111, 379, 407, 1137, 1221, 3719, 4169, 11157, 12507, 14023, 40909, 42069, 122727, 137603, 154253, 412809, 462759, 1409501, 1513633, 4228503, 4540899, 15504511, 46513533, 52151537, 156454611, 573666907, 1721000721]

約数ペア:

[(1, 1721000721), (3, 573666907), (11, 156454611), (33, 52151537), (37, 46513533), (111, 15504511), (379, 4540899), (407, 4228503), (1137, 1513633), (1221, 1409501), (3719, 462759), (4169, 412809), (11157, 154253), (12507, 137603), (14023, 122727), (40909, 42069)]