21000391750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{14923}}^1$

素因数の和:15386

約数の個数: 64

約数和(自身を含む): 42437408832

約数和(自身を除く): 21437017082

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 433, 650, 866, 1625, 2165, 3250, 4330, 5629, 10825, 11258, 14923, 21650, 28145, 29846, 54125, 56290, 74615, 108250, 140725, 149230, 193999, 281450, 373075, 387998, 703625, 746150, 969995, 1407250, 1865375, 1939990, 3730750, 4849975, 6461659, 9699950, 12923318, 24249875, 32308295, 48499750, 64616590, 84001567, 161541475, 168003134, 323082950, 420007835, 807707375, 840015670, 1615414750, 2100039175, 4200078350, 10500195875, 21000391750]

約数ペア:

[(1, 21000391750), (2, 10500195875), (5, 4200078350), (10, 2100039175), (13, 1615414750), (25, 840015670), (26, 807707375), (50, 420007835), (65, 323082950), (125, 168003134), (130, 161541475), (250, 84001567), (325, 64616590), (433, 48499750), (650, 32308295), (866, 24249875), (1625, 12923318), (2165, 9699950), (3250, 6461659), (4330, 4849975), (5629, 3730750), (10825, 1939990), (11258, 1865375), (14923, 1407250), (21650, 969995), (28145, 746150), (29846, 703625), (54125, 387998), (56290, 373075), (74615, 281450), (108250, 193999), (140725, 149230)]