21371637

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1847}}^1$

素因数の和:1905

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 14109963

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1847, 3857, 5541, 11571, 12929, 35093, 38787, 53563, 105279, 160689, 245651, 374941, 736953, 1017697, 1124823, 3053091, 7123879, 21371637]

約数ペア:

[(1, 21371637), (3, 7123879), (7, 3053091), (19, 1124823), (21, 1017697), (29, 736953), (57, 374941), (87, 245651), (133, 160689), (203, 105279), (399, 53563), (551, 38787), (609, 35093), (1653, 12929), (1847, 11571), (3857, 5541)]