19802750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 42681600

約数和(自身を除く): 22878850

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 125, 190, 209, 250, 275, 379, 418, 475, 550, 758, 950, 1045, 1375, 1895, 2090, 2375, 2750, 3790, 4169, 4750, 5225, 7201, 8338, 9475, 10450, 14402, 18950, 20845, 26125, 36005, 41690, 47375, 52250, 72010, 79211, 94750, 104225, 158422, 180025, 208450, 360050, 396055, 521125, 792110, 900125, 1042250, 1800250, 1980275, 3960550, 9901375, 19802750]

約数ペア:

[(1, 19802750), (2, 9901375), (5, 3960550), (10, 1980275), (11, 1800250), (19, 1042250), (22, 900125), (25, 792110), (38, 521125), (50, 396055), (55, 360050), (95, 208450), (110, 180025), (125, 158422), (190, 104225), (209, 94750), (250, 79211), (275, 72010), (379, 52250), (418, 47375), (475, 41690), (550, 36005), (758, 26125), (950, 20845), (1045, 18950), (1375, 14402), (1895, 10450), (2090, 9475), (2375, 8338), (2750, 7201), (3790, 5225), (4169, 4750)]