19745109

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 32707584

約数和(自身を除く): 12962475

約数列:

[1, 3, 9, 17, 23, 31, 51, 69, 93, 153, 181, 207, 279, 391, 527, 543, 713, 1173, 1581, 1629, 2139, 3077, 3519, 4163, 4743, 5611, 6417, 9231, 12121, 12489, 16833, 27693, 36363, 37467, 50499, 70771, 95387, 109089, 129053, 212313, 286161, 387159, 636939, 858483, 1161477, 2193901, 6581703, 19745109]

約数ペア:

[(1, 19745109), (3, 6581703), (9, 2193901), (17, 1161477), (23, 858483), (31, 636939), (51, 387159), (69, 286161), (93, 212313), (153, 129053), (181, 109089), (207, 95387), (279, 70771), (391, 50499), (527, 37467), (543, 36363), (713, 27693), (1173, 16833), (1581, 12489), (1629, 12121), (2139, 9231), (3077, 6417), (3519, 5611), (4163, 4743)]