18899689840

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{481153}}^1$

素因数の和:481657

約数の個数: 40

約数和(自身を含む): 44031364848

約数和(自身を除く): 25131675008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 19640, 39280, 481153, 962306, 1924612, 2405765, 3849224, 4811530, 7698448, 9623060, 19246120, 38492240, 236246123, 472492246, 944984492, 1181230615, 1889968984, 2362461230, 3779937968, 4724922460, 9449844920, 18899689840]

約数ペア:

[(1, 18899689840), (2, 9449844920), (4, 4724922460), (5, 3779937968), (8, 2362461230), (10, 1889968984), (16, 1181230615), (20, 944984492), (40, 472492246), (80, 236246123), (491, 38492240), (982, 19246120), (1964, 9623060), (2455, 7698448), (3928, 4811530), (4910, 3849224), (7856, 2405765), (9820, 1924612), (19640, 962306), (39280, 481153)]