21235400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1193}}^1$

素因数の和:1298

約数の個数: 48

約数和(自身を含む): 49968900

約数和(自身を除く): 28733500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1193, 1780, 2225, 2386, 3560, 4450, 4772, 5965, 8900, 9544, 11930, 17800, 23860, 29825, 47720, 59650, 106177, 119300, 212354, 238600, 424708, 530885, 849416, 1061770, 2123540, 2654425, 4247080, 5308850, 10617700, 21235400]

約数ペア:

[(1, 21235400), (2, 10617700), (4, 5308850), (5, 4247080), (8, 2654425), (10, 2123540), (20, 1061770), (25, 849416), (40, 530885), (50, 424708), (89, 238600), (100, 212354), (178, 119300), (200, 106177), (356, 59650), (445, 47720), (712, 29825), (890, 23860), (1193, 17800), (1780, 11930), (2225, 9544), (2386, 8900), (3560, 5965), (4450, 4772)]