21036455

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:176

約数の個数: 32

約数和(自身を含む): 28987200

約数和(自身を除く): 7950745

約数列:

[1, 5, 11, 29, 55, 109, 121, 145, 319, 545, 605, 1199, 1331, 1595, 3161, 3509, 5995, 6655, 13189, 15805, 17545, 34771, 38599, 65945, 145079, 173855, 192995, 382481, 725395, 1912405, 4207291, 21036455]

約数ペア:

[(1, 21036455), (5, 4207291), (11, 1912405), (29, 725395), (55, 382481), (109, 192995), (121, 173855), (145, 145079), (319, 65945), (545, 38599), (605, 34771), (1199, 17545), (1331, 15805), (1595, 13189), (3161, 6655), (3509, 5995)]