19520109

素因数分解:

$3^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 33686400

約数和(自身を除く): 14166291

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 173, 189, 199, 519, 567, 597, 1211, 1393, 1557, 1791, 3633, 4179, 4671, 5373, 10899, 12537, 14013, 16119, 32697, 34427, 37611, 98091, 103281, 112833, 240989, 309843, 722967, 929529, 2168901, 2788587, 6506703, 19520109]

約数ペア:

[(1, 19520109), (3, 6506703), (7, 2788587), (9, 2168901), (21, 929529), (27, 722967), (63, 309843), (81, 240989), (173, 112833), (189, 103281), (199, 98091), (519, 37611), (567, 34427), (597, 32697), (1211, 16119), (1393, 14013), (1557, 12537), (1791, 10899), (3633, 5373), (4179, 4671)]