20403383

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 29494080

約数和(自身を除く): 9090697

約数列:

[1, 7, 11, 13, 17, 77, 91, 109, 119, 121, 143, 187, 221, 763, 847, 1001, 1199, 1309, 1417, 1547, 1573, 1853, 2057, 2431, 8393, 9919, 11011, 12971, 13189, 14399, 15587, 17017, 20383, 24089, 26741, 92323, 109109, 142681, 168623, 171457, 187187, 224213, 264979, 1200199, 1569491, 1854853, 2914769, 20403383]

約数ペア:

[(1, 20403383), (7, 2914769), (11, 1854853), (13, 1569491), (17, 1200199), (77, 264979), (91, 224213), (109, 187187), (119, 171457), (121, 168623), (143, 142681), (187, 109109), (221, 92323), (763, 26741), (847, 24089), (1001, 20383), (1199, 17017), (1309, 15587), (1417, 14399), (1547, 13189), (1573, 12971), (1853, 11011), (2057, 9919), (2431, 8393)]