20235979281

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{18049}}^1$

素因数の和:18358

約数の個数: 48

約数和(自身を含む): 32593968000

約数和(自身を除く): 12357988719

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 263, 609, 789, 1421, 1841, 4263, 5523, 7627, 12887, 18049, 22881, 38661, 53389, 54147, 126343, 160167, 373723, 379029, 523421, 884401, 1121169, 1570263, 2653203, 3663947, 4746887, 10991841, 14240661, 25647629, 33228209, 76942887, 99684627, 137659723, 232597463, 412979169, 697792389, 963618061, 2890854183, 6745326427, 20235979281]

約数ペア:

[(1, 20235979281), (3, 6745326427), (7, 2890854183), (21, 963618061), (29, 697792389), (49, 412979169), (87, 232597463), (147, 137659723), (203, 99684627), (263, 76942887), (609, 33228209), (789, 25647629), (1421, 14240661), (1841, 10991841), (4263, 4746887), (5523, 3663947), (7627, 2653203), (12887, 1570263), (18049, 1121169), (22881, 884401), (38661, 523421), (53389, 379029), (54147, 373723), (126343, 160167)]