643757457

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{461}}^1\times {\mathrm{2293}}^1$

素因数の和:2793

約数の個数: 32

約数和(自身を含む): 1017434880

約数和(自身を除く): 373677423

約数列:

[1, 3, 7, 21, 29, 87, 203, 461, 609, 1383, 2293, 3227, 6879, 9681, 13369, 16051, 40107, 48153, 66497, 93583, 199491, 280749, 465479, 1057073, 1396437, 3171219, 7399511, 22198533, 30655117, 91965351, 214585819, 643757457]

約数ペア:

[(1, 643757457), (3, 214585819), (7, 91965351), (21, 30655117), (29, 22198533), (87, 7399511), (203, 3171219), (461, 1396437), (609, 1057073), (1383, 465479), (2293, 280749), (3227, 199491), (6879, 93583), (9681, 66497), (13369, 48153), (16051, 40107)]