638513812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1\times {\mathrm{953}}^1$

素因数の和:1200

約数の個数: 48

約数和(自身を含む): 1211656320

約数和(自身を除く): 573142508

約数列:

[1, 2, 4, 17, 34, 59, 68, 118, 167, 236, 334, 668, 953, 1003, 1906, 2006, 2839, 3812, 4012, 5678, 9853, 11356, 16201, 19706, 32402, 39412, 56227, 64804, 112454, 159151, 167501, 224908, 318302, 335002, 636604, 670004, 955859, 1911718, 2705567, 3823436, 5411134, 9389909, 10822268, 18779818, 37559636, 159628453, 319256906, 638513812]

約数ペア:

[(1, 638513812), (2, 319256906), (4, 159628453), (17, 37559636), (34, 18779818), (59, 10822268), (68, 9389909), (118, 5411134), (167, 3823436), (236, 2705567), (334, 1911718), (668, 955859), (953, 670004), (1003, 636604), (1906, 335002), (2006, 318302), (2839, 224908), (3812, 167501), (4012, 159151), (5678, 112454), (9853, 64804), (11356, 56227), (16201, 39412), (19706, 32402)]