21072255

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{593}}^1$

素因数の和:727

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 14510721

約数列:

[1, 3, 5, 15, 23, 69, 103, 115, 309, 345, 515, 593, 1545, 1779, 2369, 2965, 7107, 8895, 11845, 13639, 35535, 40917, 61079, 68195, 183237, 204585, 305395, 916185, 1404817, 4214451, 7024085, 21072255]

約数ペア:

[(1, 21072255), (3, 7024085), (5, 4214451), (15, 1404817), (23, 916185), (69, 305395), (103, 204585), (115, 183237), (309, 68195), (345, 61079), (515, 40917), (593, 35535), (1545, 13639), (1779, 11845), (2369, 8895), (2965, 7107)]