21263090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 23060110

約数列:

[1, 2, 5, 10, 17, 19, 29, 34, 38, 58, 85, 95, 145, 170, 190, 227, 290, 323, 454, 493, 551, 646, 986, 1102, 1135, 1615, 2270, 2465, 2755, 3230, 3859, 4313, 4930, 5510, 6583, 7718, 8626, 9367, 13166, 18734, 19295, 21565, 32915, 38590, 43130, 46835, 65830, 73321, 93670, 111911, 125077, 146642, 223822, 250154, 366605, 559555, 625385, 733210, 1119110, 1250770, 2126309, 4252618, 10631545, 21263090]

約数ペア:

[(1, 21263090), (2, 10631545), (5, 4252618), (10, 2126309), (17, 1250770), (19, 1119110), (29, 733210), (34, 625385), (38, 559555), (58, 366605), (85, 250154), (95, 223822), (145, 146642), (170, 125077), (190, 111911), (227, 93670), (290, 73321), (323, 65830), (454, 46835), (493, 43130), (551, 38590), (646, 32915), (986, 21565), (1102, 19295), (1135, 18734), (1615, 13166), (2270, 9367), (2465, 8626), (2755, 7718), (3230, 6583), (3859, 5510), (4313, 4930)]