640688535

素因数分解:

$3^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{5711}}^1$

素因数の和:6005

約数の個数: 40

約数和(自身を含む): 1152841536

約数和(自身を除く): 512153001

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 277, 405, 831, 1385, 2493, 4155, 5711, 7479, 12465, 17133, 22437, 28555, 37395, 51399, 85665, 112185, 154197, 256995, 462591, 770985, 1581947, 2312955, 4745841, 7909735, 14237523, 23729205, 42712569, 71187615, 128137707, 213562845, 640688535]

約数ペア:

[(1, 640688535), (3, 213562845), (5, 128137707), (9, 71187615), (15, 42712569), (27, 23729205), (45, 14237523), (81, 7909735), (135, 4745841), (277, 2312955), (405, 1581947), (831, 770985), (1385, 462591), (2493, 256995), (4155, 154197), (5711, 112185), (7479, 85665), (12465, 51399), (17133, 37395), (22437, 28555)]