20784081

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31363200

約数和(自身を除く): 10579119

約数列:

[1, 3, 17, 19, 51, 57, 89, 241, 267, 323, 723, 969, 1513, 1691, 4097, 4539, 4579, 5073, 12291, 13737, 21449, 28747, 64347, 77843, 86241, 233529, 364633, 407531, 1093899, 1222593, 6928027, 20784081]

約数ペア:

[(1, 20784081), (3, 6928027), (17, 1222593), (19, 1093899), (51, 407531), (57, 364633), (89, 233529), (241, 86241), (267, 77843), (323, 64347), (723, 28747), (969, 21449), (1513, 13737), (1691, 12291), (4097, 5073), (4539, 4579)]