21548366980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{547747}}^1$

素因数の和:548044

約数の個数: 48

約数和(自身を含む): 51900218496

約数和(自身を除く): 30351851516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 1124, 1405, 1967, 2810, 3934, 5620, 7868, 9835, 19670, 39340, 547747, 1095494, 2190988, 2738735, 3834229, 5477470, 7668458, 10954940, 15336916, 19171145, 38342290, 76684580, 153916907, 307833814, 615667628, 769584535, 1077418349, 1539169070, 2154836698, 3078338140, 4309673396, 5387091745, 10774183490, 21548366980]

約数ペア:

[(1, 21548366980), (2, 10774183490), (4, 5387091745), (5, 4309673396), (7, 3078338140), (10, 2154836698), (14, 1539169070), (20, 1077418349), (28, 769584535), (35, 615667628), (70, 307833814), (140, 153916907), (281, 76684580), (562, 38342290), (1124, 19171145), (1405, 15336916), (1967, 10954940), (2810, 7668458), (3934, 5477470), (5620, 3834229), (7868, 2738735), (9835, 2190988), (19670, 1095494), (39340, 547747)]