20185060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:545

約数の個数: 72

約数和(自身を含む): 50561280

約数和(自身を除く): 30376220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 479, 490, 602, 860, 958, 980, 1204, 1505, 1916, 2107, 2395, 3010, 3353, 4214, 4790, 6020, 6706, 8428, 9580, 10535, 13412, 16765, 20597, 21070, 23471, 33530, 41194, 42140, 46942, 67060, 82388, 93884, 102985, 117355, 144179, 205970, 234710, 288358, 411940, 469420, 576716, 720895, 1009253, 1441790, 2018506, 2883580, 4037012, 5046265, 10092530, 20185060]

約数ペア:

[(1, 20185060), (2, 10092530), (4, 5046265), (5, 4037012), (7, 2883580), (10, 2018506), (14, 1441790), (20, 1009253), (28, 720895), (35, 576716), (43, 469420), (49, 411940), (70, 288358), (86, 234710), (98, 205970), (140, 144179), (172, 117355), (196, 102985), (215, 93884), (245, 82388), (301, 67060), (430, 46942), (479, 42140), (490, 41194), (602, 33530), (860, 23471), (958, 21070), (980, 20597), (1204, 16765), (1505, 13412), (1916, 10535), (2107, 9580), (2395, 8428), (3010, 6706), (3353, 6020), (4214, 4790)]