21720006009

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3256861}}^1$

素因数の和:3256902

約数の個数: 32

約数和(自身を含む): 36476854400

約数和(自身を除く): 14756848391

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 171, 247, 351, 513, 741, 2223, 6669, 3256861, 9770583, 29311749, 42339193, 61880359, 87935247, 127017579, 185641077, 381052737, 556923231, 804444667, 1143158211, 1670769693, 2413334001, 7240002003, 21720006009]

約数ペア:

[(1, 21720006009), (3, 7240002003), (9, 2413334001), (13, 1670769693), (19, 1143158211), (27, 804444667), (39, 556923231), (57, 381052737), (117, 185641077), (171, 127017579), (247, 87935247), (351, 61880359), (513, 42339193), (741, 29311749), (2223, 9770583), (6669, 3256861)]