28265237

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 40755456

約数和(自身を除く): 12490219

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 121, 143, 151, 187, 221, 847, 1001, 1057, 1309, 1547, 1573, 1661, 1963, 2057, 2431, 2567, 11011, 11627, 13741, 14399, 17017, 17969, 18271, 21593, 26741, 28237, 33371, 127897, 151151, 187187, 197659, 233597, 237523, 310607, 367081, 1662661, 2174249, 2569567, 4037891, 28265237]

約数ペア:

[(1, 28265237), (7, 4037891), (11, 2569567), (13, 2174249), (17, 1662661), (77, 367081), (91, 310607), (119, 237523), (121, 233597), (143, 197659), (151, 187187), (187, 151151), (221, 127897), (847, 33371), (1001, 28237), (1057, 26741), (1309, 21593), (1547, 18271), (1573, 17969), (1661, 17017), (1963, 14399), (2057, 13741), (2431, 11627), (2567, 11011)]