21996400

素因数分解:

$2^4\times 5^2\times {\mathrm{127}}^1\times {\mathrm{433}}^1$

素因数の和:578

約数の個数: 60

約数和(自身を含む): 53385472

約数和(自身を除く): 31389072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 127, 200, 254, 400, 433, 508, 635, 866, 1016, 1270, 1732, 2032, 2165, 2540, 3175, 3464, 4330, 5080, 6350, 6928, 8660, 10160, 10825, 12700, 17320, 21650, 25400, 34640, 43300, 50800, 54991, 86600, 109982, 173200, 219964, 274955, 439928, 549910, 879856, 1099820, 1374775, 2199640, 2749550, 4399280, 5499100, 10998200, 21996400]

約数ペア:

[(1, 21996400), (2, 10998200), (4, 5499100), (5, 4399280), (8, 2749550), (10, 2199640), (16, 1374775), (20, 1099820), (25, 879856), (40, 549910), (50, 439928), (80, 274955), (100, 219964), (127, 173200), (200, 109982), (254, 86600), (400, 54991), (433, 50800), (508, 43300), (635, 34640), (866, 25400), (1016, 21650), (1270, 17320), (1732, 12700), (2032, 10825), (2165, 10160), (2540, 8660), (3175, 6928), (3464, 6350), (4330, 5080)]