19785428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 19841068

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 71, 92, 142, 233, 284, 299, 466, 598, 923, 932, 1196, 1633, 1846, 3029, 3266, 3692, 5359, 6058, 6532, 10718, 12116, 16543, 21229, 21436, 33086, 42458, 66172, 69667, 84916, 139334, 215059, 278668, 380489, 430118, 760978, 860236, 1521956, 4946357, 9892714, 19785428]

約数ペア:

[(1, 19785428), (2, 9892714), (4, 4946357), (13, 1521956), (23, 860236), (26, 760978), (46, 430118), (52, 380489), (71, 278668), (92, 215059), (142, 139334), (233, 84916), (284, 69667), (299, 66172), (466, 42458), (598, 33086), (923, 21436), (932, 21229), (1196, 16543), (1633, 12116), (1846, 10718), (3029, 6532), (3266, 6058), (3692, 5359)]