20320458

素因数分解:

$2^1\times 3^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 21193014

約数列:

[1, 2, 3, 6, 103, 131, 206, 251, 262, 309, 393, 502, 618, 753, 786, 1506, 13493, 25853, 26986, 32881, 40479, 51706, 65762, 77559, 80958, 98643, 155118, 197286, 3386743, 6773486, 10160229, 20320458]

約数ペア:

[(1, 20320458), (2, 10160229), (3, 6773486), (6, 3386743), (103, 197286), (131, 155118), (206, 98643), (251, 80958), (262, 77559), (309, 65762), (393, 51706), (502, 40479), (618, 32881), (753, 26986), (786, 25853), (1506, 13493)]