19638619

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{853}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 27546624

約数和(自身を除く): 7908005

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 853, 1001, 1771, 2093, 3289, 5971, 9383, 11089, 19619, 23023, 65681, 77623, 121979, 137333, 215809, 255047, 853853, 1510663, 1785329, 2805517, 19638619]

約数ペア:

[(1, 19638619), (7, 2805517), (11, 1785329), (13, 1510663), (23, 853853), (77, 255047), (91, 215809), (143, 137333), (161, 121979), (253, 77623), (299, 65681), (853, 23023), (1001, 19619), (1771, 11089), (2093, 9383), (3289, 5971)]