18181228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 36789984

約数和(自身を除く): 18608756

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 131, 157, 221, 262, 314, 442, 524, 628, 884, 1703, 2041, 2227, 2669, 3406, 4082, 4454, 5338, 6812, 8164, 8908, 10676, 20567, 28951, 34697, 41134, 57902, 69394, 82268, 115804, 138788, 267371, 349639, 534742, 699278, 1069484, 1398556, 4545307, 9090614, 18181228]

約数ペア:

[(1, 18181228), (2, 9090614), (4, 4545307), (13, 1398556), (17, 1069484), (26, 699278), (34, 534742), (52, 349639), (68, 267371), (131, 138788), (157, 115804), (221, 82268), (262, 69394), (314, 57902), (442, 41134), (524, 34697), (628, 28951), (884, 20567), (1703, 10676), (2041, 8908), (2227, 8164), (2669, 6812), (3406, 5338), (4082, 4454)]