19895590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{13913}}^1$

素因数の和:13944

約数の個数: 32

約数和(自身を含む): 42075936

約数和(自身を除く): 22180346

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 13913, 27826, 69565, 139130, 153043, 180869, 306086, 361738, 765215, 904345, 1530430, 1808690, 1989559, 3979118, 9947795, 19895590]

約数ペア:

[(1, 19895590), (2, 9947795), (5, 3979118), (10, 1989559), (11, 1808690), (13, 1530430), (22, 904345), (26, 765215), (55, 361738), (65, 306086), (110, 180869), (130, 153043), (143, 139130), (286, 69565), (715, 27826), (1430, 13913)]