21238900

素因数分解:

$2^2\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1303}}^1$

素因数の和:1480

約数の個数: 36

約数和(自身を含む): 46406752

約数和(自身を除く): 25167852

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 163, 326, 652, 815, 1303, 1630, 2606, 3260, 4075, 5212, 6515, 8150, 13030, 16300, 26060, 32575, 65150, 130300, 212389, 424778, 849556, 1061945, 2123890, 4247780, 5309725, 10619450, 21238900]

約数ペア:

[(1, 21238900), (2, 10619450), (4, 5309725), (5, 4247780), (10, 2123890), (20, 1061945), (25, 849556), (50, 424778), (100, 212389), (163, 130300), (326, 65150), (652, 32575), (815, 26060), (1303, 16300), (1630, 13030), (2606, 8150), (3260, 6515), (4075, 5212)]