21759452

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 45276000

約数和(自身を除く): 23516548

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 109, 143, 218, 286, 349, 436, 572, 698, 1199, 1396, 1417, 2398, 2834, 3839, 4537, 4796, 5668, 7678, 9074, 15356, 15587, 18148, 31174, 38041, 49907, 62348, 76082, 99814, 152164, 199628, 418451, 494533, 836902, 989066, 1673804, 1978132, 5439863, 10879726, 21759452]

約数ペア:

[(1, 21759452), (2, 10879726), (4, 5439863), (11, 1978132), (13, 1673804), (22, 989066), (26, 836902), (44, 494533), (52, 418451), (109, 199628), (143, 152164), (218, 99814), (286, 76082), (349, 62348), (436, 49907), (572, 38041), (698, 31174), (1199, 18148), (1396, 15587), (1417, 15356), (2398, 9074), (2834, 7678), (3839, 5668), (4537, 4796)]