12965020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 28351008

約数和(自身を除く): 15385988

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 163, 164, 194, 205, 326, 388, 410, 485, 652, 815, 820, 970, 1630, 1940, 3260, 3977, 6683, 7954, 13366, 15811, 15908, 19885, 26732, 31622, 33415, 39770, 63244, 66830, 79055, 79540, 133660, 158110, 316220, 648251, 1296502, 2593004, 3241255, 6482510, 12965020]

約数ペア:

[(1, 12965020), (2, 6482510), (4, 3241255), (5, 2593004), (10, 1296502), (20, 648251), (41, 316220), (82, 158110), (97, 133660), (163, 79540), (164, 79055), (194, 66830), (205, 63244), (326, 39770), (388, 33415), (410, 31622), (485, 26732), (652, 19885), (815, 15908), (820, 15811), (970, 13366), (1630, 7954), (1940, 6683), (3260, 3977)]