21000978350

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{4093}}^1$

素因数の和:4626

約数の個数: 96

約数和(自身を含む): 44958015360

約数和(自身を除く): 23957037010

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 190, 209, 275, 418, 475, 491, 550, 950, 982, 1045, 2090, 2455, 4093, 4910, 5225, 5401, 8186, 9329, 10450, 10802, 12275, 18658, 20465, 24550, 27005, 40930, 45023, 46645, 54010, 77767, 90046, 93290, 102325, 102619, 135025, 155534, 204650, 205238, 225115, 233225, 270050, 388835, 450230, 466450, 513095, 777670, 855437, 1026190, 1125575, 1710874, 1944175, 2009663, 2251150, 2565475, 3888350, 4019326, 4277185, 5130950, 8554370, 10048315, 20096630, 21385925, 22106293, 38183597, 42771850, 44212586, 50241575, 76367194, 100483150, 110531465, 190917985, 221062930, 381835970, 420019567, 552657325, 840039134, 954589925, 1105314650, 1909179850, 2100097835, 4200195670, 10500489175, 21000978350]

約数ペア:

[(1, 21000978350), (2, 10500489175), (5, 4200195670), (10, 2100097835), (11, 1909179850), (19, 1105314650), (22, 954589925), (25, 840039134), (38, 552657325), (50, 420019567), (55, 381835970), (95, 221062930), (110, 190917985), (190, 110531465), (209, 100483150), (275, 76367194), (418, 50241575), (475, 44212586), (491, 42771850), (550, 38183597), (950, 22106293), (982, 21385925), (1045, 20096630), (2090, 10048315), (2455, 8554370), (4093, 5130950), (4910, 4277185), (5225, 4019326), (5401, 3888350), (8186, 2565475), (9329, 2251150), (10450, 2009663), (10802, 1944175), (12275, 1710874), (18658, 1125575), (20465, 1026190), (24550, 855437), (27005, 777670), (40930, 513095), (45023, 466450), (46645, 450230), (54010, 388835), (77767, 270050), (90046, 233225), (93290, 225115), (102325, 205238), (102619, 204650), (135025, 155534)]