19989590

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 36923040

約数和(自身を除く): 16933450

約数列:

[1, 2, 5, 10, 73, 139, 146, 197, 278, 365, 394, 695, 730, 985, 1390, 1970, 10147, 14381, 20294, 27383, 28762, 50735, 54766, 71905, 101470, 136915, 143810, 273830, 1998959, 3997918, 9994795, 19989590]

約数ペア:

[(1, 19989590), (2, 9994795), (5, 3997918), (10, 1998959), (73, 273830), (139, 143810), (146, 136915), (197, 101470), (278, 71905), (365, 54766), (394, 50735), (695, 28762), (730, 27383), (985, 20294), (1390, 14381), (1970, 10147)]