18865648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1613}}^1$

素因数の和:1681

約数の個数: 40

約数和(自身を含む): 39626928

約数和(自身を除く): 20761280

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 1613, 2924, 3226, 5848, 6452, 11696, 12904, 25808, 27421, 54842, 69359, 109684, 138718, 219368, 277436, 438736, 554872, 1109744, 1179103, 2358206, 4716412, 9432824, 18865648]

約数ペア:

[(1, 18865648), (2, 9432824), (4, 4716412), (8, 2358206), (16, 1179103), (17, 1109744), (34, 554872), (43, 438736), (68, 277436), (86, 219368), (136, 138718), (172, 109684), (272, 69359), (344, 54842), (688, 27421), (731, 25808), (1462, 12904), (1613, 11696), (2924, 6452), (3226, 5848)]