18959590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:433

約数の個数: 64

約数和(自身を含む): 40715136

約数和(自身を除く): 21755546

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 34, 46, 65, 85, 115, 130, 170, 221, 230, 299, 373, 391, 442, 598, 746, 782, 1105, 1495, 1865, 1955, 2210, 2990, 3730, 3910, 4849, 5083, 6341, 8579, 9698, 10166, 12682, 17158, 24245, 25415, 31705, 42895, 48490, 50830, 63410, 82433, 85790, 111527, 145843, 164866, 223054, 291686, 412165, 557635, 729215, 824330, 1115270, 1458430, 1895959, 3791918, 9479795, 18959590]

約数ペア:

[(1, 18959590), (2, 9479795), (5, 3791918), (10, 1895959), (13, 1458430), (17, 1115270), (23, 824330), (26, 729215), (34, 557635), (46, 412165), (65, 291686), (85, 223054), (115, 164866), (130, 145843), (170, 111527), (221, 85790), (230, 82433), (299, 63410), (373, 50830), (391, 48490), (442, 42895), (598, 31705), (746, 25415), (782, 24245), (1105, 17158), (1495, 12682), (1865, 10166), (1955, 9698), (2210, 8579), (2990, 6341), (3730, 5083), (3910, 4849)]