18961677

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 35093760

約数和(自身を除く): 16132083

約数列:

[1, 3, 7, 9, 19, 21, 31, 49, 57, 63, 73, 93, 133, 147, 171, 217, 219, 279, 399, 441, 511, 589, 651, 657, 931, 1197, 1387, 1519, 1533, 1767, 1953, 2263, 2793, 3577, 4123, 4161, 4557, 4599, 5301, 6789, 8379, 9709, 10731, 12369, 12483, 13671, 15841, 20367, 28861, 29127, 32193, 37107, 42997, 47523, 67963, 86583, 87381, 110887, 128991, 142569, 203889, 259749, 300979, 332661, 386973, 611667, 902937, 997983, 2106853, 2708811, 6320559, 18961677]

約数ペア:

[(1, 18961677), (3, 6320559), (7, 2708811), (9, 2106853), (19, 997983), (21, 902937), (31, 611667), (49, 386973), (57, 332661), (63, 300979), (73, 259749), (93, 203889), (133, 142569), (147, 128991), (171, 110887), (217, 87381), (219, 86583), (279, 67963), (399, 47523), (441, 42997), (511, 37107), (589, 32193), (651, 29127), (657, 28861), (931, 20367), (1197, 15841), (1387, 13671), (1519, 12483), (1533, 12369), (1767, 10731), (1953, 9709), (2263, 8379), (2793, 6789), (3577, 5301), (4123, 4599), (4161, 4557)]