19408005

素因数分解:

$3^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{277}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 35118072

約数和(自身を除く): 15710067

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 173, 277, 405, 519, 831, 865, 1385, 1557, 2493, 2595, 4155, 4671, 7479, 7785, 12465, 14013, 22437, 23355, 37395, 47921, 70065, 112185, 143763, 239605, 431289, 718815, 1293867, 2156445, 3881601, 6469335, 19408005]

約数ペア:

[(1, 19408005), (3, 6469335), (5, 3881601), (9, 2156445), (15, 1293867), (27, 718815), (45, 431289), (81, 239605), (135, 143763), (173, 112185), (277, 70065), (405, 47921), (519, 37395), (831, 23355), (865, 22437), (1385, 14013), (1557, 12465), (2493, 7785), (2595, 7479), (4155, 4671)]