18815667

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 9569613

約数列:

[1, 3, 13, 31, 39, 79, 93, 197, 237, 403, 591, 1027, 1209, 2449, 2561, 3081, 6107, 7347, 7683, 15563, 18321, 31837, 46689, 79391, 95511, 202319, 238173, 482453, 606957, 1447359, 6271889, 18815667]

約数ペア:

[(1, 18815667), (3, 6271889), (13, 1447359), (31, 606957), (39, 482453), (79, 238173), (93, 202319), (197, 95511), (237, 79391), (403, 46689), (591, 31837), (1027, 18321), (1209, 15563), (2449, 7683), (2561, 7347), (3081, 6107)]