19494760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 46785600

約数和(自身を除く): 27290840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 113, 152, 190, 226, 227, 380, 452, 454, 565, 760, 904, 908, 1130, 1135, 1816, 2147, 2260, 2270, 4294, 4313, 4520, 4540, 8588, 8626, 9080, 10735, 17176, 17252, 21470, 21565, 25651, 34504, 42940, 43130, 51302, 85880, 86260, 102604, 128255, 172520, 205208, 256510, 487369, 513020, 974738, 1026040, 1949476, 2436845, 3898952, 4873690, 9747380, 19494760]

約数ペア:

[(1, 19494760), (2, 9747380), (4, 4873690), (5, 3898952), (8, 2436845), (10, 1949476), (19, 1026040), (20, 974738), (38, 513020), (40, 487369), (76, 256510), (95, 205208), (113, 172520), (152, 128255), (190, 102604), (226, 86260), (227, 85880), (380, 51302), (452, 43130), (454, 42940), (565, 34504), (760, 25651), (904, 21565), (908, 21470), (1130, 17252), (1135, 17176), (1816, 10735), (2147, 9080), (2260, 8626), (2270, 8588), (4294, 4540), (4313, 4520)]