16989819

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 64

約数和(自身を含む): 30720000

約数和(自身を除く): 13730181

約数列:

[1, 3, 7, 11, 19, 21, 33, 49, 57, 77, 79, 133, 147, 209, 231, 237, 343, 399, 539, 553, 627, 869, 931, 1029, 1463, 1501, 1617, 1659, 2607, 2793, 3773, 3871, 4389, 4503, 6083, 6517, 10241, 10507, 11319, 11613, 16511, 18249, 19551, 27097, 30723, 31521, 42581, 49533, 71687, 73549, 81291, 115577, 127743, 215061, 220647, 298067, 346731, 514843, 809039, 894201, 1544529, 2427117, 5663273, 16989819]

約数ペア:

[(1, 16989819), (3, 5663273), (7, 2427117), (11, 1544529), (19, 894201), (21, 809039), (33, 514843), (49, 346731), (57, 298067), (77, 220647), (79, 215061), (133, 127743), (147, 115577), (209, 81291), (231, 73549), (237, 71687), (343, 49533), (399, 42581), (539, 31521), (553, 30723), (627, 27097), (869, 19551), (931, 18249), (1029, 16511), (1463, 11613), (1501, 11319), (1617, 10507), (1659, 10241), (2607, 6517), (2793, 6083), (3773, 4503), (3871, 4389)]