18981639866

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1\times {\mathrm{857}}^1$

素因数の和:1775

約数の個数: 64

約数和(自身を含む): 34124073984

約数和(自身を除く): 15142434118

約数列:

[1, 2, 7, 14, 41, 47, 82, 94, 287, 329, 574, 658, 821, 857, 1642, 1714, 1927, 3854, 5747, 5999, 11494, 11998, 13489, 26978, 33661, 35137, 38587, 40279, 67322, 70274, 77174, 80558, 235627, 245959, 270109, 281953, 471254, 491918, 540218, 563906, 703597, 1407194, 1582067, 1651439, 3164134, 3302878, 4925179, 9850358, 11074469, 11560073, 22148938, 23120146, 28847477, 33069059, 57694954, 66138118, 201932339, 231483413, 403864678, 462966826, 1355831419, 2711662838, 9490819933, 18981639866]

約数ペア:

[(1, 18981639866), (2, 9490819933), (7, 2711662838), (14, 1355831419), (41, 462966826), (47, 403864678), (82, 231483413), (94, 201932339), (287, 66138118), (329, 57694954), (574, 33069059), (658, 28847477), (821, 23120146), (857, 22148938), (1642, 11560073), (1714, 11074469), (1927, 9850358), (3854, 4925179), (5747, 3302878), (5999, 3164134), (11494, 1651439), (11998, 1582067), (13489, 1407194), (26978, 703597), (33661, 563906), (35137, 540218), (38587, 491918), (40279, 471254), (67322, 281953), (70274, 270109), (77174, 245959), (80558, 235627)]