21306402

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:245

約数の個数: 80

約数和(自身を含む): 52527552

約数和(自身を除く): 31221150

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 67, 78, 81, 117, 134, 151, 162, 201, 234, 302, 351, 402, 453, 603, 702, 871, 906, 1053, 1206, 1359, 1742, 1809, 1963, 2106, 2613, 2718, 3618, 3926, 4077, 5226, 5427, 5889, 7839, 8154, 10117, 10854, 11778, 12231, 15678, 17667, 20234, 23517, 24462, 30351, 35334, 47034, 53001, 60702, 70551, 91053, 106002, 131521, 141102, 159003, 182106, 263042, 273159, 318006, 394563, 546318, 789126, 819477, 1183689, 1638954, 2367378, 3551067, 7102134, 10653201, 21306402]

約数ペア:

[(1, 21306402), (2, 10653201), (3, 7102134), (6, 3551067), (9, 2367378), (13, 1638954), (18, 1183689), (26, 819477), (27, 789126), (39, 546318), (54, 394563), (67, 318006), (78, 273159), (81, 263042), (117, 182106), (134, 159003), (151, 141102), (162, 131521), (201, 106002), (234, 91053), (302, 70551), (351, 60702), (402, 53001), (453, 47034), (603, 35334), (702, 30351), (871, 24462), (906, 23517), (1053, 20234), (1206, 17667), (1359, 15678), (1742, 12231), (1809, 11778), (1963, 10854), (2106, 10117), (2613, 8154), (2718, 7839), (3618, 5889), (3926, 5427), (4077, 5226)]