21209328

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 69290208

約数和(自身を除く): 48080880

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, 397, 424, 477, 504, 636, 742, 794, 848, 954, 1008, 1113, 1191, 1272, 1484, 1588, 1908, 2226, 2382, 2544, 2779, 2968, 3176, 3339, 3573, 3816, 4452, 4764, 5558, 5936, 6352, 6678, 7146, 7632, 8337, 8904, 9528, 11116, 13356, 14292, 16674, 17808, 19056, 21041, 22232, 25011, 26712, 28584, 33348, 42082, 44464, 50022, 53424, 57168, 63123, 66696, 84164, 100044, 126246, 133392, 147287, 168328, 189369, 200088, 252492, 294574, 336656, 378738, 400176, 441861, 504984, 589148, 757476, 883722, 1009968, 1178296, 1325583, 1514952, 1767444, 2356592, 2651166, 3029904, 3534888, 5302332, 7069776, 10604664, 21209328]

約数ペア:

[(1, 21209328), (2, 10604664), (3, 7069776), (4, 5302332), (6, 3534888), (7, 3029904), (8, 2651166), (9, 2356592), (12, 1767444), (14, 1514952), (16, 1325583), (18, 1178296), (21, 1009968), (24, 883722), (28, 757476), (36, 589148), (42, 504984), (48, 441861), (53, 400176), (56, 378738), (63, 336656), (72, 294574), (84, 252492), (106, 200088), (112, 189369), (126, 168328), (144, 147287), (159, 133392), (168, 126246), (212, 100044), (252, 84164), (318, 66696), (336, 63123), (371, 57168), (397, 53424), (424, 50022), (477, 44464), (504, 42082), (636, 33348), (742, 28584), (794, 26712), (848, 25011), (954, 22232), (1008, 21041), (1113, 19056), (1191, 17808), (1272, 16674), (1484, 14292), (1588, 13356), (1908, 11116), (2226, 9528), (2382, 8904), (2544, 8337), (2779, 7632), (2968, 7146), (3176, 6678), (3339, 6352), (3573, 5936), (3816, 5558), (4452, 4764)]