21480497800

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{539711}}^1$

素因数の和:539926

約数の個数: 48

約数和(自身を含む): 50193216000

約数和(自身を除く): 28712718200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 796, 995, 1592, 1990, 3980, 4975, 7960, 9950, 19900, 39800, 539711, 1079422, 2158844, 2698555, 4317688, 5397110, 10794220, 13492775, 21588440, 26985550, 53971100, 107402489, 107942200, 214804978, 429609956, 537012445, 859219912, 1074024890, 2148049780, 2685062225, 4296099560, 5370124450, 10740248900, 21480497800]

約数ペア:

[(1, 21480497800), (2, 10740248900), (4, 5370124450), (5, 4296099560), (8, 2685062225), (10, 2148049780), (20, 1074024890), (25, 859219912), (40, 537012445), (50, 429609956), (100, 214804978), (199, 107942200), (200, 107402489), (398, 53971100), (796, 26985550), (995, 21588440), (1592, 13492775), (1990, 10794220), (3980, 5397110), (4975, 4317688), (7960, 2698555), (9950, 2158844), (19900, 1079422), (39800, 539711)]