18709300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 43920800

約数和(自身を除く): 25211500

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 229, 380, 430, 458, 475, 817, 860, 916, 950, 1075, 1145, 1634, 1900, 2150, 2290, 3268, 4085, 4300, 4351, 4580, 5725, 8170, 8702, 9847, 11450, 16340, 17404, 19694, 20425, 21755, 22900, 39388, 40850, 43510, 49235, 81700, 87020, 98470, 108775, 187093, 196940, 217550, 246175, 374186, 435100, 492350, 748372, 935465, 984700, 1870930, 3741860, 4677325, 9354650, 18709300]

約数ペア:

[(1, 18709300), (2, 9354650), (4, 4677325), (5, 3741860), (10, 1870930), (19, 984700), (20, 935465), (25, 748372), (38, 492350), (43, 435100), (50, 374186), (76, 246175), (86, 217550), (95, 196940), (100, 187093), (172, 108775), (190, 98470), (215, 87020), (229, 81700), (380, 49235), (430, 43510), (458, 40850), (475, 39388), (817, 22900), (860, 21755), (916, 20425), (950, 19694), (1075, 17404), (1145, 16340), (1634, 11450), (1900, 9847), (2150, 8702), (2290, 8170), (3268, 5725), (4085, 4580), (4300, 4351)]