19985712

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:498

約数の個数: 80

約数和(自身を含む): 55258368

約数和(自身を除く): 35272656

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 43, 46, 48, 69, 86, 92, 129, 138, 172, 184, 258, 276, 344, 368, 421, 516, 552, 688, 842, 989, 1032, 1104, 1263, 1684, 1978, 2064, 2526, 2967, 3368, 3956, 5052, 5934, 6736, 7912, 9683, 10104, 11868, 15824, 18103, 19366, 20208, 23736, 29049, 36206, 38732, 47472, 54309, 58098, 72412, 77464, 108618, 116196, 144824, 154928, 217236, 232392, 289648, 416369, 434472, 464784, 832738, 868944, 1249107, 1665476, 2498214, 3330952, 4996428, 6661904, 9992856, 19985712]

約数ペア:

[(1, 19985712), (2, 9992856), (3, 6661904), (4, 4996428), (6, 3330952), (8, 2498214), (12, 1665476), (16, 1249107), (23, 868944), (24, 832738), (43, 464784), (46, 434472), (48, 416369), (69, 289648), (86, 232392), (92, 217236), (129, 154928), (138, 144824), (172, 116196), (184, 108618), (258, 77464), (276, 72412), (344, 58098), (368, 54309), (421, 47472), (516, 38732), (552, 36206), (688, 29049), (842, 23736), (989, 20208), (1032, 19366), (1104, 18103), (1263, 15824), (1684, 11868), (1978, 10104), (2064, 9683), (2526, 7912), (2967, 6736), (3368, 5934), (3956, 5052)]