21665435

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 8139109

約数列:

[1, 5, 11, 31, 55, 97, 131, 155, 341, 485, 655, 1067, 1441, 1705, 3007, 4061, 5335, 7205, 12707, 15035, 20305, 33077, 44671, 63535, 139777, 165385, 223355, 393917, 698885, 1969585, 4333087, 21665435]

約数ペア:

[(1, 21665435), (5, 4333087), (11, 1969585), (31, 698885), (55, 393917), (97, 223355), (131, 165385), (155, 139777), (341, 63535), (485, 44671), (655, 33077), (1067, 20305), (1441, 15035), (1705, 12707), (3007, 7205), (4061, 5335)]