21112812

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 44931348

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 29, 36, 42, 54, 58, 63, 81, 84, 87, 107, 108, 116, 126, 162, 174, 189, 203, 214, 243, 252, 261, 321, 324, 348, 378, 406, 428, 486, 522, 567, 609, 642, 749, 756, 783, 812, 963, 972, 1044, 1134, 1218, 1284, 1498, 1566, 1701, 1827, 1926, 2247, 2268, 2349, 2436, 2889, 2996, 3103, 3132, 3402, 3654, 3852, 4494, 4698, 5481, 5778, 6206, 6741, 6804, 7047, 7308, 8667, 8988, 9309, 9396, 10962, 11556, 12412, 13482, 14094, 16443, 17334, 18618, 20223, 21721, 21924, 26001, 26964, 27927, 28188, 32886, 34668, 37236, 40446, 43442, 49329, 52002, 55854, 60669, 65163, 65772, 80892, 83781, 86884, 98658, 104004, 111708, 121338, 130326, 167562, 182007, 195489, 197316, 242676, 251343, 260652, 335124, 364014, 390978, 502686, 586467, 728028, 754029, 781956, 1005372, 1172934, 1508058, 1759401, 2345868, 3016116, 3518802, 5278203, 7037604, 10556406, 21112812]

約数ペア:

[(1, 21112812), (2, 10556406), (3, 7037604), (4, 5278203), (6, 3518802), (7, 3016116), (9, 2345868), (12, 1759401), (14, 1508058), (18, 1172934), (21, 1005372), (27, 781956), (28, 754029), (29, 728028), (36, 586467), (42, 502686), (54, 390978), (58, 364014), (63, 335124), (81, 260652), (84, 251343), (87, 242676), (107, 197316), (108, 195489), (116, 182007), (126, 167562), (162, 130326), (174, 121338), (189, 111708), (203, 104004), (214, 98658), (243, 86884), (252, 83781), (261, 80892), (321, 65772), (324, 65163), (348, 60669), (378, 55854), (406, 52002), (428, 49329), (486, 43442), (522, 40446), (567, 37236), (609, 34668), (642, 32886), (749, 28188), (756, 27927), (783, 26964), (812, 26001), (963, 21924), (972, 21721), (1044, 20223), (1134, 18618), (1218, 17334), (1284, 16443), (1498, 14094), (1566, 13482), (1701, 12412), (1827, 11556), (1926, 10962), (2247, 9396), (2268, 9309), (2349, 8988), (2436, 8667), (2889, 7308), (2996, 7047), (3103, 6804), (3132, 6741), (3402, 6206), (3654, 5778), (3852, 5481), (4494, 4698)]