1815515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:119

約数の個数: 32

約数和(自身を含む): 2612736

約数和(自身を除く): 797221

約数列:

[1, 5, 13, 17, 31, 53, 65, 85, 155, 221, 265, 403, 527, 689, 901, 1105, 1643, 2015, 2635, 3445, 4505, 6851, 8215, 11713, 21359, 27931, 34255, 58565, 106795, 139655, 363103, 1815515]

約数ペア:

[(1, 1815515), (5, 363103), (13, 139655), (17, 106795), (31, 58565), (53, 34255), (65, 27931), (85, 21359), (155, 11713), (221, 8215), (265, 6851), (403, 4505), (527, 3445), (689, 2635), (901, 2015), (1105, 1643)]