19893380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4027}}^1$

素因数の和:4068

約数の個数: 48

約数和(自身を含む): 47369280

約数和(自身を除く): 27475900

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4027, 4940, 8054, 16108, 20135, 40270, 52351, 76513, 80540, 104702, 153026, 209404, 261755, 306052, 382565, 523510, 765130, 994669, 1047020, 1530260, 1989338, 3978676, 4973345, 9946690, 19893380]

約数ペア:

[(1, 19893380), (2, 9946690), (4, 4973345), (5, 3978676), (10, 1989338), (13, 1530260), (19, 1047020), (20, 994669), (26, 765130), (38, 523510), (52, 382565), (65, 306052), (76, 261755), (95, 209404), (130, 153026), (190, 104702), (247, 80540), (260, 76513), (380, 52351), (494, 40270), (988, 20135), (1235, 16108), (2470, 8054), (4027, 4940)]