21551000

素因数分解:

$2^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{937}}^1$

素因数の和:981

約数の個数: 64

約数和(自身を含む): 52678080

約数和(自身を除く): 31127080

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 184, 200, 230, 250, 460, 500, 575, 920, 937, 1000, 1150, 1874, 2300, 2875, 3748, 4600, 4685, 5750, 7496, 9370, 11500, 18740, 21551, 23000, 23425, 37480, 43102, 46850, 86204, 93700, 107755, 117125, 172408, 187400, 215510, 234250, 431020, 468500, 538775, 862040, 937000, 1077550, 2155100, 2693875, 4310200, 5387750, 10775500, 21551000]

約数ペア:

[(1, 21551000), (2, 10775500), (4, 5387750), (5, 4310200), (8, 2693875), (10, 2155100), (20, 1077550), (23, 937000), (25, 862040), (40, 538775), (46, 468500), (50, 431020), (92, 234250), (100, 215510), (115, 187400), (125, 172408), (184, 117125), (200, 107755), (230, 93700), (250, 86204), (460, 46850), (500, 43102), (575, 37480), (920, 23425), (937, 23000), (1000, 21551), (1150, 18740), (1874, 11500), (2300, 9370), (2875, 7496), (3748, 5750), (4600, 4685)]