21850416

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:483

約数の個数: 120

約数和(自身を含む): 71379360

約数和(自身を除く): 49528944

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 53, 56, 63, 72, 84, 106, 112, 126, 144, 159, 168, 212, 252, 318, 336, 371, 409, 424, 477, 504, 636, 742, 818, 848, 954, 1008, 1113, 1227, 1272, 1484, 1636, 1908, 2226, 2454, 2544, 2863, 2968, 3272, 3339, 3681, 3816, 4452, 4908, 5726, 5936, 6544, 6678, 7362, 7632, 8589, 8904, 9816, 11452, 13356, 14724, 17178, 17808, 19632, 21677, 22904, 25767, 26712, 29448, 34356, 43354, 45808, 51534, 53424, 58896, 65031, 68712, 86708, 103068, 130062, 137424, 151739, 173416, 195093, 206136, 260124, 303478, 346832, 390186, 412272, 455217, 520248, 606956, 780372, 910434, 1040496, 1213912, 1365651, 1560744, 1820868, 2427824, 2731302, 3121488, 3641736, 5462604, 7283472, 10925208, 21850416]

約数ペア:

[(1, 21850416), (2, 10925208), (3, 7283472), (4, 5462604), (6, 3641736), (7, 3121488), (8, 2731302), (9, 2427824), (12, 1820868), (14, 1560744), (16, 1365651), (18, 1213912), (21, 1040496), (24, 910434), (28, 780372), (36, 606956), (42, 520248), (48, 455217), (53, 412272), (56, 390186), (63, 346832), (72, 303478), (84, 260124), (106, 206136), (112, 195093), (126, 173416), (144, 151739), (159, 137424), (168, 130062), (212, 103068), (252, 86708), (318, 68712), (336, 65031), (371, 58896), (409, 53424), (424, 51534), (477, 45808), (504, 43354), (636, 34356), (742, 29448), (818, 26712), (848, 25767), (954, 22904), (1008, 21677), (1113, 19632), (1227, 17808), (1272, 17178), (1484, 14724), (1636, 13356), (1908, 11452), (2226, 9816), (2454, 8904), (2544, 8589), (2863, 7632), (2968, 7362), (3272, 6678), (3339, 6544), (3681, 5936), (3816, 5726), (4452, 4908)]