638443871

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 742103040

約数和(自身を除く): 103659169

約数列:

[1, 13, 19, 67, 173, 223, 247, 871, 1273, 2249, 2899, 3287, 4237, 11591, 14941, 16549, 38579, 42731, 55081, 150683, 194233, 220229, 283879, 501527, 733001, 2584793, 2862977, 3690427, 9529013, 33602309, 49111067, 638443871]

約数ペア:

[(1, 638443871), (13, 49111067), (19, 33602309), (67, 9529013), (173, 3690427), (223, 2862977), (247, 2584793), (871, 733001), (1273, 501527), (2249, 283879), (2899, 220229), (3287, 194233), (4237, 150683), (11591, 55081), (14941, 42731), (16549, 38579)]