18663500

素因数分解:

$2^2\times 5^3\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 41190240

約数和(自身を除く): 22526740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 163, 229, 250, 326, 458, 500, 652, 815, 916, 1145, 1630, 2290, 3260, 4075, 4580, 5725, 8150, 11450, 16300, 20375, 22900, 28625, 37327, 40750, 57250, 74654, 81500, 114500, 149308, 186635, 373270, 746540, 933175, 1866350, 3732700, 4665875, 9331750, 18663500]

約数ペア:

[(1, 18663500), (2, 9331750), (4, 4665875), (5, 3732700), (10, 1866350), (20, 933175), (25, 746540), (50, 373270), (100, 186635), (125, 149308), (163, 114500), (229, 81500), (250, 74654), (326, 57250), (458, 40750), (500, 37327), (652, 28625), (815, 22900), (916, 20375), (1145, 16300), (1630, 11450), (2290, 8150), (3260, 5725), (4075, 4580)]