19814996

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:380

約数の個数: 36

約数和(自身を含む): 37573116

約数和(自身を除く): 17758120

約数列:

[1, 2, 4, 17, 34, 61, 68, 122, 244, 281, 289, 562, 578, 1037, 1124, 1156, 2074, 4148, 4777, 9554, 17141, 17629, 19108, 34282, 35258, 68564, 70516, 81209, 162418, 291397, 324836, 582794, 1165588, 4953749, 9907498, 19814996]

約数ペア:

[(1, 19814996), (2, 9907498), (4, 4953749), (17, 1165588), (34, 582794), (61, 324836), (68, 291397), (122, 162418), (244, 81209), (281, 70516), (289, 68564), (562, 35258), (578, 34282), (1037, 19108), (1124, 17629), (1156, 17141), (2074, 9554), (4148, 4777)]